CN1587157A - High strength silicate clinker and its preparing method - Google Patents

Abstract

The high strength silicate cement clinker contains small amount of P or P and F and tricalcium silicate, which accounts for 66-76 wt% and is rhombohedral lattice tricalcium silicate or the mixture of rhombohedral lattice tricalcium silicate and monoclinic tricalcium silicate. The present invention also provides the preparation process of the high strength silicate cement clinker, and the preparation process includes mainly adding P and F and sintering at 1400-1500 deg.c. The cement clinker has raised tricalcium silicate content, improved tricalcium silicate crystal structure and raised C3S content and thus raised strength.

Description

A kind of high strength silicate clinker and preparation method thereof

Technical field

The invention belongs to the general cement field of Cement industry, be specifically related to a kind of high-intensity Portland clinker and preparation method thereof.

Background technology

With Portland clinker is that the cement of main bonding component is the cement of current consumption maximum, comprises some special cements such as six big general cement and cement for dam, road cement, white cement, and its quantity accounts for more than 98% of the total consumption of cement.Portland clinker mainly comprises four big mineral: tricalcium silicate (is 3CaOSiO ₂, write a Chinese character in simplified form into C usually ₃S), Dicalcium Phosphate (Feed Grade) (is 2CaOSiO ₂, write a Chinese character in simplified form into C usually ₂S), tricalcium aluminate (is 3CaOAl ₂O ₃, write a Chinese character in simplified form into C usually ₃A) and tetracalcium aluminoferrite sosoloid (be 4CaOAl ₂O ₃Fe ₂O ₃, write a Chinese character in simplified form into C usually ₄AF).The total amount of these four kinds of mineral in Portland clinker accounts for 95% even higher.Wherein the normal solid solution plurality of impurities of tricalcium silicate crystal is otherwise known as " A Lite " (Alite), tricalcium silicate (C ₃S) be that content is the highest in the cement clinker of silicate system, usually at 50-60%; Tricalcium silicate is the best mineral of gelling property in the grog, is the topmost source of strength of cement.In the Portland clinker sintering process, C ₃S is the highest mineral of formation temperature, C ₃Burning till of grog in fact also just represented in the abundant formation of S.

The temperature range that cement clinker normally burns till in Industrial Stoves is 1350 ℃～1450 ℃, and the temperature that advanced cement kiln can burn is higher, and the normal firing temperature of grog is 1400 ℃～1500 ℃.Grinding is to specific surface area 320m ²/ kg～350m ²The intensity of cement clinker is generally 50MPa～60MPa during/kg.

Obtain tricalcium silicate (C ₃S) content is about 70% cement clinker, existing scheme is: one, undoping when burning till admixture, employing is higher than 1600 ℃ firing temperature, the tricalcium silicate that burns till this moment mostly is three oblique or monoclinic forms, can increase with the levigate strength of cement of making of this grog, but not only waste a large amount of energy consumptions up to 1600 ℃ firing temperatures, and existing stove is difficult to satisfy this high temperature requirement.Two, for reducing firing temperature, adopt the composite mineralizer easy fired technology of admixture fluorine, sulphur mineralizer, can make a large amount of temperature that form of tricalcium silicate reduce about 100 ℃, thereby the grog firing temperature can be reduced about 100 ℃, reduce and burn till hear rate more than 10%.Adopt the method for admixture fluorine sulphur composite mineralizer, Al in the raw material ₂O ₃Content is 3～6%, and lime saturation factor is 0.92～0.98, SO ₃/ Al ₂O ₃=1.15～1.45, at grog mesosilicic acid three calcium contentss about 70%, anhydrous calcium sulphoaluminate content 3～10%, high-temperature calcined gypsum content 3.5-6% that 1300 ℃ of calcinings are made and contain a small amount of other mineral.With the levigate cement of making of this grog quite high intensity is arranged, its 28 days ultimate compression strength reach about the 60MPa of present national standard (iso standard).But adulterated fluorine sulphur composite mineralizer produces sulfur oxide in this method in the grog sintering process, and evaporable sulfur oxide contaminate environment is brought serious environmental issue.

The innovation and creation content

The purpose of this invention is to provide a kind of high strength silicate clinker that can in the temperature range of normally burning till, obtain.

High strength silicate clinker provided by the invention wherein contains trace amounts of phosphorus or trace amounts of phosphorus and Trace Fluoride, and the tricalcium silicate of weight percent 66%～76%, and tricalcium silicate is the mixture of trigonal lattice or trigonal lattice and monoclinic lattice.

Above-mentioned high strength silicate clinker specifically comprises following component, by weight the percentage ratio meter:

Tricalcium silicate, i.e. C ₃S 66%～76%;

Dicalcium Phosphate (Feed Grade), i.e. C ₂S 3～15%;

Tricalcium aluminate, i.e. C ₃A 3～12%;

Tetracalcium aluminoferrite, i.e. C ₄AF 6～14%;

Free calcium oxide, promptly f-CaO 0～1.2%; And

Surplus is other phase; Wherein, described trace amounts of phosphorus is with P ₂O ₅Count 0.05%～0.9%, described Trace Fluoride is with CaF ₂Count 0～1.5%.

Above-mentioned high strength silicate clinker, wherein said tricalcium silicate weight percent is preferably 69%～74%.

Another object of the present invention is to provide a kind of environmental protection, the energy-conservation method for preparing high strength silicate clinker.

The preparation method of high strength silicate clinker of the present invention is to mix P contained compound or P contained compound and fluorochemicals as burning till admixture in raw material, and firing range is 1400 ℃～1550 ℃; Wherein, the P contained compound incorporation is with P ₂O ₅The weight percent that meter accounts for raw material is 0.1%～0.7%, and fluorochemicals is with F ^-The weight percent that meter accounts for raw material is 0%～1.2%.

In the aforesaid method, P contained compound and fluorochemicals incorporation are with P ₂O ₅Meter is preferably 0.2～0.4%, and fluorochemicals is with F ^-Meter is preferably 0～1.0%.

In the aforesaid method, described P contained compound is to be selected from Rock Phosphate (72Min BPL), phosphorus mine tailing, phosphorus slag, the slag one or more, and described fluorochemicals is for being selected from fluorite, fluorite mine tailing, one or more in Sodium Silicofluoride, fluorgypsum and the fluorine-containing industrial residue.

The preparation method of above-mentioned high strength silicate clinker is specially the phosphorus slag that adds 4～12wt% in the raw material of 90～96wt%, wherein P in the phosphorus slag ₂O ₅Content 1.2%～2%, F ^-Be 2～3%, bring P into by phosphorus slag ₂O ₅And CaF ₂, firing range is 1400 ℃～1550 ℃; Wherein each weight percentages of components is in the raw material: CaO=66.5%～67.1%, SiO ₂=21.2%～21.5%, Al ₂O ₃=4.7%～5.1%, Fe ₂O ₃=2.9%～3.3%, remain and be other compositions.

The preparation method of above-mentioned high strength silicate clinker is specially the Rock Phosphate (72Min BPL) that adds 4～10wt% in the raw material of 90～96wt%, and firing range is 1400 ℃～1550 ℃; Wherein each weight percentages of components is in the raw material:

CaO=66.4%～67.3%, SiO ₂=21.1%～21.6%, Al ₂O ₃=4.3%～5.4%, Fe ₂O ₃=2.6%～3.6%, remain and be other compositions.

Adopt technique scheme, this high strength grog mesosilicic acid three calcium contentss that the present invention proposes are higher than traditional grog, and the tricalcium silicate that burns till is the mixture of trigonal lattice or trigonal lattice and monoclinic lattice, the free calcium oxide content of grog is lower than 1.2%, tricalcium silicate content is higher than 65%, and 28 days ultimate compression strength of grog is higher than 65MPa.

The present invention prepares the method for high strength silicate clinker, mainly in preparation process, add phosphorus and fluorine, grog can be burnt till in normal temperature range (1400-1500 ℃), and improve the intensity of cement clinker by the crystalline structure that improves tricalcium silicate content in the grog and improvement tricalcium silicate, by improving C ₃S content makes the intensity of cement clinker also be higher than traditional cement clinker.

Preparation method of the present invention at first can use existing cement furnace to prepare the higher cement clinker of tricalcium silicate content in normal temperature range, unnecessary other construction high temperature (more than 1600 ℃) stove, thereby reduce expenses and energy consumption; The present invention does not use the sulfur-bearing admixture, can not produce sulfur oxide in the sintering process and pollute compliance with environmental protection requirements.

The grog that the present invention obtained has self intensity height, blended material is excited the strong characteristics of ability, the height that can realize cement strengthen and cement in the big volumeization of blended material, and can remedy the concrete poor calcium problem of big volume mineral admixture.

Cement clinker of the present invention is allocated the blended material of gypsum and different volumes into, just can be made into the high-strength cement of different intensity grades.In Portland cement blending amount of mixture material scope, can increase substantially strength of cement, under identical blending amount of mixture material, adopt standard GB-175-1999, GB1344-1999 detects, the high strength grade of cement that strength of cement of the present invention is produced than common cement clinker.At same strength grade, increase substantially blending amount of mixture material than common grog.Concrete by this cement preparation has early strength and advantages such as final strength is high especially, good endurance, is easier to realize concrete high performance than traditional cement.

Description of drawings

Fig. 1 does not have adulterated pure silicon acid DFP (C ₃S) X ray diffracting spectrum belongs to triclinic T ₃Crystal formation.

Fig. 2 mixes 0.4%P ₂O ₅+ 0.7%CaF ₂The X ray diffracting spectrum of tricalcium silicate, belong to the R crystal formation of trigonal system.

Fig. 3 mixes P ₂O ₅And CaF ₂Cement clinker in the X ray diffracting spectrum of the tricalcium silicate sosoloid that extracts, belong to the R crystal formation of trigonal system.

Fig. 4 mixes P ₂O ₅Cement clinker in the X ray diffracting spectrum of tricalcium silicate of the tricalcium silicate sosoloid that extracts, belong to the R crystal formation and the monoclinic M of trigonal system ₁The mixture of crystal formation.

Fig. 5 singly mixes 1%CaF ₂The time C ₃The XRD figure spectrum of S sosoloid, this tricalcium silicate belongs to triclinic T3 crystal formation.

Fig. 6 singly mixes 1.5%CaF ₂The time C ₃The XRD figure spectrum of S sosoloid, this tricalcium silicate belongs to monoclinic M1 crystal formation.

Fig. 7 singly mixes 2%CaF ₂The time C ₃The XRD figure spectrum of S sosoloid, this tricalcium silicate belongs to the crystal formation of trigonal system.

Embodiment

The present invention will solve following key problem in technology:

(1). improve the burn-ability of high alite cement clinker.The burn-ability of Portland clinker is with C ₃The increase variation of S content is difficult to burn till under industrial condition.The present invention at first will adopt suitable doping techniques by rationally adjusting the clinker mineral coupling, improves the burn-ability of grog, and it can be produced in the common used in industry cement kiln smoothly.

In the cement clinker provided by the invention, C ₃S content 66%～75% (weight percentage), free calcium oxide content are lower than 1.2% (weight percentage).Mineral composition scope: tricalcium silicate (C ₃S)=66%～76%; Dicalcium Phosphate (Feed Grade) (C ₂S)=3～15%; Tricalcium aluminate (C ₃A)=3～12%; Tetracalcium aluminoferrite (C ₄AF)=6～14%.

The span that above-mentioned compositing range is converted into the grog rate value LSF that adopted in the common manufacture of cement or KH, SM, IM is as follows: LSF=0.96～1.00 (perhaps KH=0.95～0.99), SM=1.7～3.2, IM=1.2～1.9.

(2). adopt to be doped to the A Lite lattice activating technology of feature.Only improve the C in the grog ₃S content, clinker strength not necessarily improves, and perhaps increase rate is not clearly.The present invention also will be by introducing foreign ion phosphorus or compound phosphorus and fluorine in the cement clinker conventional chemical is formed, the brilliant looks of the crystal formation of control A Lite distort its lattice, increase defect level, the activation lattice improves hydration activity, thereby obtains high strength clinker.Referring to Fig. 1 to Fig. 4, characterized A Lite (C in the cement clinker of the present invention ₃S) the brilliant looks of crystal formation can see that therefrom the pure silicon acid DFP that does not have admixture P and F belongs to triclinic T ₃Crystal formation, the tricalcium silicate of a small amount of P of admixture and F is transformed into the R crystal formation of monoclinic M1 crystal formation and trigonal system.If separately admixture F also can make tricalcium silicate be transformed into the R crystal formation of trigonal system, but needed CaF ₂Quantity is bigger, (seeing Fig. 5 to Fig. 7).The required impurity level of compound admixture P and F is less.

Among the present invention, mainly be that admixture is burnt till in the conduct of admixture P contained compound and fluorochemicals, make C ₃The higher cement clinker of S content can burn till at normal firing range.

Adopt phosphorus ore containing as trace doped component.The phosphorus volume that adopts in the existing research is higher, and the conclusion that draws thus is to mix the formation that phosphorus helps Dicalcium Phosphate (Feed Grade), but is unfavorable for the formation of tricalcium silicate, even tricalcium silicate will be decomposed.See Table 1.Adopt the research of phosphorous slag ingredient that report was also arranged, but be confined to common tricalcium silicate content range.Such as, adopt electric furnace phosphoric slag as mineralizer, P ₂O ₅Volume 0.24-2.26%, the tricalcium silicate content of grog be less than 60%, measures according to former national standard (GB 175-1985), and 28 days ultimate compression strength of grog is lower than 60MPa, is equivalent to the 50MPa of present national standard or lower, sees Table 2 and table 3.

Table 1 mixes phosphorus silicate minerals is formed and the influence of decomposing (1450 ℃ are incubated 2 hours)

Proportioning raw materials (wt%)	????C/S	????P 2O 5(％)	???f-CaO(％)	Press f-CaO and calculate chemical combination rate or rate of decomposition
					65.11CaO+34.89SiO 2	????2	????0	???0.40	About 99%CaO and SiO 2Chemical combination
57.85CaO+31SiO 2+11.15C 3P	????2	????5.1	???0.39	About 99%CaO and SiO 2Chemical combination
					73.75CaO+26.25SiO 2	????3	????0	???7.43	About 90%CaO and SiO 2Chemical combination
50.53CaO+25.1SiO 2+4.375C 3P	????3	????2.0	???27.00	About 60%CaO and SiO 2Chemical combination
					75.44β-C 2S+24.56CaO	????3	????0	???8.74	About 64% β-C 2S and SiO 2Chemical combination
75.44β-C 2S+24.56CaO+21.8C 3P	????3	????10	???21.20	About 14% β-C 2S and SiO 2Chemical combination
					93.45C 3S+6.55C 3P	????3	????3	???2.76	About 11%C 3S decomposes
78.15C 3S+21.85C 3P	????3	????10	???14.30	About 58%C 3S decomposes

Table 2 P ₂O ₅Content is to the influence (old standard GB 175-1985) of clinker strength

Numbering	Grog rate value (batching)			????P 2O 5	????f-CaO	Ultimate compression strength (MPa)
									????Kh	????n	????P	????％	????％	????3d	????7d	????28d
	????P1	????0.94	????1.80	????2.60	????0.24	????3.80	????30.47	????51.25									????59.88
????P2									????0.93	????1.83	????2.57	????0.90	????3.02	????24.40	????39.00	????57.23
	????P3	????0.91	????1.89	????2.60	????1.54	????5.32	????19.70	????31.46									????47.63
????P4									????0.90	????1.89	????2.38	????2.26	????7.27	????9.60	????17.05	????48.51

The batching rate value of the little kiln grog of table 3 and clinker strength (old standard GB 175-1985)

Phosphorus slag volume %	The rate value			????f-CaO ????(％)	????C 3S ????(％)	Folding strength (MPa)			Ultimate compression strength (MPa)
													????Kh	????n	????P	????3d	????7d	????28d	????3d	????7d	????28d	????90d
	??0	????0.97	????2.71			????2.73	????5.19	????51.33	????4.90	????5.48	????6.86	????25.3											????32.7	????45.8	????56.7
??10				????1.00	????3.06								????2.83	????4.39	????60.79	????4.31	????5.78	????7.45	????27.5	????36.3	????50.6	????64.7
	??15	????0.98	????2.62			????2.68	????4.20	????57.58	????5.10	????5.78	????7.55	????27.4											????38.6	????54.3	????70.8
??20				????0.97	????2.29								????2.56	????3.64	????55.38	????6.08	????7.25	????7.94	????39.9	????51.6	????64.4	????78.8
	??30	????0.97	????4.68			????2.88	????3.87	????62.67	????6.57	????7.54	????8.62	????42.2											????53.6	????67.4	????81.3

The present invention verifies by experiment, mixes a small amount of P contained compound in the raw material as burning till admixture, but can improve burnability of raw material, improves sintering process, quickens the formation of grog.Incorporation is with P ₂O ₅The weight percent that meter accounts for raw material is 0.07%～0.70% o'clock, burns till more or less freely.

Here, P contained compound comprises: phosphorus slag, Rock Phosphate (72Min BPL), phosphorus mine tailing, slag etc.Fluorochemicals is a fluorite, fluorite mine tailing, Sodium Silicofluoride, fluorgypsum and other fluorine-containing industrial residues.

The present invention mixes fluorochemicals again when mixing a small amount of P contained compound, fluorochemicals is with F ^-Meter accounts for the weight percent 0%～1.2% of raw material, mixes the cement slurry of a small amount of P contained compound and fluorochemicals, burns till high C at lesser temps ₃The grog of S content, 1400 ℃～1550 ℃ of the temperature ranges of burning till, and this clinker strength increases, and grinding is to specific surface area 310m ²/ kg～360m ²28 of grog days ultimate compression strength reaches 65MPa～85MPa during/kg, improves 5～20MPa than common grog.

Embodiment 1,

Adopting Wingdale, clay, quartz sand is main raw material, as correction material, introduces minor component by mixing slag, fluorite, phosphorus mine tailing respectively with alumina, is mixed with cement slurry.Each raw-meal ingredient sees Table 1-1, wherein, and P in the raw material ₂O ₅Incorporation be 0.1%～0.34%, CaF ₂Incorporation be 0.04%～0.39%, table all is a mass percent among the 1-1.Wherein slag contains small amounts phosphorus and fluorine, and the phosphorus mine tailing contains small amounts phosphorus.Table 1-2 is listed in the rate value of the grog of design and mineral composition, and wherein KH is a lime saturation factor, and SM is a silica modulus, and IM is an aluminium-oxygen modulus, C ₃S represents tricalcium silicate (3CaOSiO ₂), C ₂S represents Dicalcium Phosphate (Feed Grade) (2CaOSiO ₂), C ₃A represents tricalcium aluminate (3CaOAl ₂O ₃), C ₄AF represents tetracalcium aluminoferrite (4CaOAl ₂O ₃Fe ₂O ₃).Raw material are heated up, be fired into cement clinker at 1400 ℃, 1450 ℃ and 1500 ℃ respectively, the free calcium oxide content under the chemical ingredients of grog and each temperature sees Table 1-3, all is mass percent in the table.Find out that from the free calcium oxide data under the condition of mixing Trace Fluoride and phosphorus, the cement clinker of high tricalcium silicate content all burns till at 1400 ℃, 1450 ℃ and 1500 ℃, illustrates that grog has the firing range of broad, is suitable for suitability for industrialized production.Table 1-4 provides the mineral composition of 1500 ℃ of grogs that burn till, and considers the solid solution of impurity in the silicic acid salt face, and the content of grog mesosilicic acid DFP sosoloid (being called A Lite again) all is higher than the listed numerical value of table 1-4, and C ₃A and C ₄AF content is lower than listed numerical value in the table, numbers wherein that A Lite content all reaches more than 70% in the grog of A1, A2, A4, A5 and A6.

The grog of 95% quality and the natural dihydrate gypsum of 5% quality are mixed, grinding in ball mill, specific surface area reaches 340m ²/ kg～360m ²/ kg adopts the method for national Specification to test intensity, the results are shown in table 1-4.Very high from the intensity of the visible grog of result of table 1-4.

Table 1-1

Numbering	Wingdale	Clay	Quartz sand	Alumina	Gypsum	Fluorite	Slag	The phosphorus mine tailing	Summation
										?A1	??80.4	??15.4	??0.7	??0.3	??0	??0	??3.2	????0	?100.0
?A2	??80.1	??15.3	??0.7	??0.3	??0	??0.4	??3.2	????0	?100.0
										?A3	??79.0	??15.1	??0.7	??0.3	??1.4	??0.4	??3.1	????0	?100.0
?A4	??72.0	??15.4	??0.7	??0.3	??0	??0	??3.2	????8.4	?100.0
										?A5	??72.8	??13.5	??0.5	??0	??0	??0.4	??12.8	????0	?100.0
?A6	??64.7	??13.6	??0.5	??0	??0	??0	??12.8	????8.4	?100.0

Table 1-2

Numbering	Design grog rate value			Design clinker mineral composition/%
									????KH	????SM	????IM	????C 3S	????C 2S	????C 3A	????C 4AF	Other
	????A1	????0.97	????2.67	????2.00	????72.5	????6.2	????9.5	????8.1									????3.7
????A2									????0.97	????2.67	????1.99	????72.4	????5.8	????9.5	????8.0	????4.3
	????A3	????0.97	????2.68	????2.01	????71.0	????5.9	????9.3	????7.8									????6.0
????A4									????0.97	????2.67	????2.00	????72.2	????6.2	????9.5	????8.0	????4.1
	????A5	????0.98	????1.98	????0.93	????72.0	????2.8	????4.0	????15.8									????5.4
????A6									????0.98	????1.99	????0.94	????71.8	????3.2	????4.1	????15.8	????5.1

Table 1-3

Numbering	Grog chemical ingredients/%									Grog free calcium oxide/%
													?SiO 2	?Al 2O 3	?Fe 2O 3	?CaO	?MgO	?SO 3	?CaF 2	?P 2O 5	Other	?1400℃	?1450℃	?1500℃
	?A1	?21.24	?5.30	?2.65	?67.12	?2.41	?0.00	?0.06	?0.15	?1.07	?1.40	?1.06													?0.98
?A2													?21.08	?5.26	?2.64	?66.75	?2.40	?0.00	?0.61	?0.15	?1.11	?1.17	?1.08	?0.88
	?A3	?20.74	?5.17	?2.58	?66.29	?2.35	?0.99	?0.60	?0.15	?1.13	?1.35	?1.40													?1.22
?A4													?21.18	?5.28	?2.64	?66.91	?2.40	?0.00	?0.08	?0.37	?1.04	?0.97	?1.09	?0.37
	?A5	?19.92	?4.85	?5.19	?64.69	?3.35	?0.00	?0.58	?0.26	?1.13	?0.87	?0.67													?0.81
?A6													?20.01	?4.87	?5.20	?64.84	?3.35	?0.00	?0.13	?0.50	?1.00	?0.45	?0.11	?0.17

Table 1-4

Numbering	1500 ℃ of mineral composition/%					Ultimate compression strength/MPa		Folding strength/MPa
										?C 3S	?C 2S	?C 3A	?C 4AF	Other	3 days	28 days	3 days	28 days
	?A1	?68.4	?9.3	?9.6	?8.1	?4.6	?5.8	?10.1	?39.6										?70.2
?A2										?68.7	?8.6	?9.5	?8.0	?5.2	?6.1	?10.5	?40.1	?70.7
	?A3	?65.9	?9.8	?9.4	?7.8	?7.1	?5.7	?9.5	?38.5										?68.6
?A4										?70.6	?7.5	?9.5	?8.0	?4.4	?6.3	?10.7	?41.6	?71.1
	?A5	?68.6	?5.3	?4.1	?15.8	?6.2	?6.2	?10.2	?41.2										?70.5
?A6										?71.0	?3.8	?4.1	?15.8	?5.3	?5.9	?10.8	?42.7	?73.6

Embodiment 2

Adopting Wingdale, clay is main raw material, as correction material, mixes slag, fluorite, gypsum, phosphorus mine tailing with iron powder respectively, is introduced minor components such as fluorine, phosphorus, sulphur by these raw materials, is mixed with cement slurry.P in the phosphorus mine tailing ₂O ₅Content is 3.3%.Each raw-meal ingredient sees Table 2-1, wherein P in the raw material ₂O ₅And CaF ₂Incorporation be respectively 0.07%～and 0.29% and 0.04%～0.41%, the grog rate value and the mineral composition of design see Table 2-2.All mass percent in the table.Raw material are heated up, be fired into cement clinker at 1400 ℃, 1450 ℃ and 1500 ℃ respectively, the free calcium oxide content under the chemical ingredients of grog and each temperature sees Table 2-3 (all being mass percent in the table).Find out that from the free calcium oxide data this cement clinker of organizing high tricalcium silicate content all burns till substantially at 1400 ℃, 1450 ℃ and 1500 ℃, illustrates that grog has the firing range of broad.But B2 that the sulfur-bearing that wherein mixes gypsum is higher and B5 burnability of raw material can be worse than other several groups of raw material slightly.Table 2-4 provides the mineral composition of 1500 ℃ of grogs that burn till, and the content of grog mesosilicic acid DFP sosoloid (being called A Lite again) all is higher than the listed numerical value of table 2-4, and C ₃A and C ₄AF content is lower than listed numerical value in the table.The grog of 95% quality and the natural dihydrate gypsum of 5% quality are mixed, grinding in ball mill, specific surface area reaches 340m ²/ kg～360m ²/ kg adopts the method for national Specification to test intensity, the results are shown in table 2-4.

Table 2-1

Numbering	Wingdale	Clay	Iron powder	Gypsum	Fluorite	Slag	The phosphorus mine tailing	Summation
									??B1	????79.3	??16.2	??0.4	??0	????0	??4.1	??0	??100.0
??B2	????78.5	??15.9	??0.4	??1.3	????0	??3.9	??0	??100.0
									??B3	????79.2	??16.1	??0.4	??0	????0.4	??3.9	??0	??100.0
??B4	????73.1	??16.2	??0.4	??0	????0	??3.9	??6.4	??100.0
									??B5	????78.2	??15.8	??0.4	??1.4	????0.4	??3.8	??0	??100.0

The grog rate value and the clinker mineral of table 2-2 design are formed

Numbering	Design grog rate value			Design clinker mineral composition/%
									??KH	??SM	??IM	??C 3S	??C 2S	??C 3A	??C 4AF	Other
	??B1	??0.96	??2.5	??1.6	??70.4	??7.5	??8.2	??10.0									??3.9
??B2									??0.97	??2.5	??1.6	??70.8	??6.0	??8.1	??9.7	??5.4
	??B3	??0.96	??2.5	??1.6	??70.9	??6.6	??8.2	??9.8									??4.5
??B4									??0.96	??2.5	??1.6	??70.7	??7.0	??8.3	??9.8	??4.2
	??B5	??0.97	??2.5	??1.6	??70.8	??5.5	??8.1	??9.6									??6.1

Table 2-3

Numbering	Grog chemical ingredients/%									Grog free calcium oxide/%
													?SiO 2	?Al 2O 3	?Fe 2O 3	?CaO	?MgO	?SO 3	?CaF 2	?P 2O 5	Other	?1400℃	?1450℃	?1500℃
	?B1	?21.13	?5.21	?3.29	?66.50	?2.51	?0.03	?0.05	?0.12	?1.16	?1.00	?0.69													?0.62
?B2													?20.71	?5.11	?3.20	?66.26	?2.46	?0.95	?0.05	?0.11	?1.15	?1.79	?1.40	?1.33
	?B3	?20.96	?5.17	?3.22	?66.22	?2.48	?0.03	?0.65	?0.11	?1.16	?1.43	?1.04													?0.93
?B4													?21.06	?5.19	?3.22	?66.38	?2.48	?0.03	?0.05	?0.43	?1.16	?1.28	?0.74	?0.47
	?B5	?20.54	?5.06	?3.15	?65.88	?2.44	?1.02	?0.60	?0.11	?1.20	?1.70	?1.44													?1.50

Table 2-4

Numbering	1500 ℃ of mineral composition/%					Ultimate compression strength/MPa		Folding strength/MPa
										????C 3S	????C 2S	????C 3A	????C 4AF	Other	3 days	28 days	3 days	28 days
	????B1	????67.7	????9.5	????8.2	????10.0	????4.6	????5.6	????9.6	????37.3										????67.4
????B2										????65.3	????10.1	????8.1	????9.7	????6.8	????5.6	????9.5	????36.1	????66.2
	????B3	????67.0	????9.5	????8.3	????9.8	????5.4	????5.8	????9.7	????37.9										????68.3
????B4										????68.7	????8.6	????8.3	????9.8	????4.6	????6.0	????10.1	????39.6	????70.1
	????B5	????64.5	????10.2	????8.1	????9.6	????7.6	????5.5	????8.9	????35.2										????65.5

Embodiment 3

Adopting Wingdale, clay, iron powder, quartz sand, flyash is raw material, mixes Rock Phosphate (72Min BPL) and introduces minor component P ₂O ₅, be mixed with cement slurry.P in the Rock Phosphate (72Min BPL) ₂O ₅Content 21.3%.Each raw-meal ingredient sees Table 3-1, all is mass percent in the table.Table 3-2 is listed in the grog rate value of design and mineral composition.

Raw material are heated up, be fired into cement clinker at 1400 ℃, 1450 ℃ and 1500 ℃ respectively, the free calcium oxide content under the chemical ingredients of grog and each temperature sees Table 3-3, all is mass percent in the table.Find out that from the free calcium oxide data mixing under the condition of trace amounts of phosphorus, the cement clinker of these high tricalcium silicate content all burns till at 1400 ℃, 1450 ℃ and 1500 ℃, illustrate that grog has the good burn-ability and the firing range of broad.Table 3-4 provides the mineral composition of 1500 ℃ of grogs that burn till, and the content of A Lite is all about 70% in E4 and the E8 grog.

The grog of 95% quality and the natural dihydrate gypsum of 5% quality are mixed, grinding in ball mill, specific surface area reaches 340m ²/ kg～360m ²/ kg adopts the method for national Specification to test intensity, the results are shown in table 3-4.Reached higher intensity from the visible grog of result of table 3-4.

Table 3-1

Numbering	Wingdale	Clay	Iron powder	Quartz sand	Low calcium fly ash	High-calcium fly ass	Rock Phosphate (72Min BPL)	Summation
									??E3	??81.7	??8.6	??1.8	??3.9	??3.0	??0	????1.0	??100.0
??E4	??80.1	??7.0	??1.2	??3.8	??0	??6.9	????1.0	??100.0
									??E7	??80.8	??5.8	??3.9	??4.6	??3.9	??0	????1.0	??100.0
??E8	??79.0	??6.4	??3.3	??3.4	??0	??6.9	????1.0	??100.0

Table 3-2

	Design grog rate value			Design clinker mineral composition/%
									Numbering	????KH	????SM	????IM	????C 3S	????C 2S	????C 3A	????C 4AF	Other
????E3	????0.97	????2.50	????1.60	????72.1	????6.3	????8.3	????9.9	????3.3
									????E4	????0.96	????2.50	????1.62	????71.2	????6.8	????8.4	????9.8	????3.9
????E7	????0.97	????2.00	????1.03	????71.2	????4.8	????5.2	????15.3	????3.5
									????E8	????0.97	????2.00	????1.02	????70.2	????5.2	????5.1	????15.2	????4.2

Table 3-3

Numbering	Grog chemical ingredients/%								Free calcium oxide/%
												?SiO 2	?Al 2O 3	?Fe 2O 3	?CaO	?MgO	?SO 3	?P 2O 5	Other	????1400℃	????1450℃	????1500℃
	?E3	?21.19	?5.23	?3.26	?67.14	?2.11	?0.16	?0.32	?0.59	????1.14	????1.29												????1.32
?E4												?21.10	?5.21	?3.21	?66.81	?2.22	?0.31	?0.32	?0.82	????1.32	????1.08	????0.46
	?E7	?20.40	?5.18	?5.02	?66.11	?2.14	?0.33	?0.32	?0.50	????1.20	????1.11												????0.85
?E8												?20.29	?5.13	?5.02	?65.68	?2.26	?0.47	?0.32	?0.83	????1.25	????0.57	????0.22

Table 3-4

Numbering	1500 ℃ of mineral composition %					Ultimate compression strength (MPa)		Folding strength (MPa)
										????C 3S	????C 2S	????C 3A	????C 4AF	Other	3 days	28 days	3 days	28 days
	????E3	????66.6	????10.5	????8.3	????9.9	????4.7	????5.6	????9.5	????37.5										????67.8
????E4										????69.2	????8.3	????8.4	????9.8	????4.3	????6.2	????10.5	????40.1	????70.3
	????E7	????67.6	????7.5	????5.3	????15.3	????4.3	????5.3	????9.8	????38.9										????68.9
????E8										????69.2	????6.0	????5.1	????15.3	????4.4	????5.6	????10.7	????41.6	????71.4

Embodiment 4

Adopting Wingdale, clay, iron powder is main raw material, mixes Rock Phosphate (72Min BPL), fluorite, gypsum and introduces minor component P ₂O ₅, CaF ₂, CaSO ₄, be mixed with cement slurry.P in the Rock Phosphate (72Min BPL) wherein ₂O ₅Content 16.6%.Each raw-meal ingredient sees Table 4-1, and the grog rate value and the mineral composition of design see Table 4-2.All mass percent in the table.

Raw material are heated up, be fired into cement clinker at 1450 ℃ ± 50 ℃, the chemical ingredients of grog sees Table 4-3, all is mass percent in the table.Clinker mineral composition behind the free calcium oxide content of grog, the rate value of grog and the deduction free calcium oxide is listed in table 4-4, find out from the free calcium oxide data, under the condition of mixing Trace Fluoride and phosphorus and sulphur, the cement clinker of high tricalcium silicate content burns till at 1450 ℃ ± 50 ℃, illustrates that grog is suitable for modern cement kiln suitability for industrialized production.The A Lite content of each grog is all up to about 70% among the table 4-4.

The grog of 95% quality and the natural dihydrate gypsum of 5% quality are mixed, grinding in ball mill, specific surface area reaches 320m ²/ kg～350m ²/ kg adopts the method for national Specification to test time of coagulation, stability and intensity, and test result is listed in table 4-5.Normal from time of coagulation of the visible grog of result of table 4-5, meet national standard, stability is qualified, and the F4 clinker strength that is mixed with gypsum in the raw material is low slightly, and 28 days ultimate compression strength of other two groups of grogs is all above 70MPa, and later strength still increases by a fairly big margin.

Table 4-1

Numbering	Wingdale	Clay	Iron powder	Rock Phosphate (72Min BPL)	Fluorite	Gypsum	Summation
								?F3	?80.4	?16.3	?1.6	?1.3	?0.4	????0	?100.0
?F4	?79.2	?16.1	?1.6	?1.3	?0.4	????1.4	?100.0
								?F9	?79.2	?16.3	?1.6	?2.5	?0.4	????0	?100.0

Table 4-2

Numbering	Design grog rate value			Design clinker mineral one-tenth/%
									??KH	??SM	??IM	??C 3S	??C 2S	??C 3A	??C 4AF	Other
	??F3	??0.97	??2.53	??1.62	??71.8	??5.8	??8.2	??9.6									??4.5
??F4									??0.97	??2.52	??1.61	??70.1	??6.2	??8.0	??9.5	??6.2
	??F9	??0.97	??2.53	??1.62	??71.5	??5.9	??8.2	??9.6									??4.8

Table 4-3

Numbering	Grog chemical ingredients/%
										??SiO 2	??Al 2O 3	??Fe 2O 3	??CaO	??MgO	??SO 3	??CaF 2	??P 2O 5	Other
	????F3	??20.94	??5.12	??3.17	??66.38	??2.09	??0.13	??0.61	??0.32										??1.24
????F4										??20.61	??5.04	??3.13	??65.87	??2.05	??1.12	??0.61	??0.31	??1.26
	????F9	??20.88	??5.11	??3.16	??66.16	??2.07	??0.13	??0.61	??0.63										??1.25

Table 4-4

Numbering	Free calcium oxide/%	Grog rate value			Clinker mineral composition/%
										??KH	??SM	??IM	??C 3S	??C 2S	??C 3A	??C 4AF	Other
		????F3	??0.22	??0.96	??2.53	??1.62	??70.68	??6.62	??8.23									??9.62	?4.85
????F4	??0.11									??0.96	??2.52	??1.61	??69.14	??6.67	??8.07	??9.52	?6.60
		????F9	??0.49	??0.96	??2.53	??1.62	??70.23	??6.86	??8.20									??9.60	?5.11

Table 4-5

Numbering	Specific surface area/m 2/kg	Time of coagulation/min		Stability	Folding strength/Mpa				Ultimate compression strength/Mpa
													Initial set	Final set	??3d	??7d	??28d	??90d	??3d	??7d	??28d	??90d
		??F3	????328		??276	??317	Qualified	??5.9	??8.2	??10.3	??10.4	??34.3											??50.6	??70.9	??82.7
??F4	????341			??372									??444	Qualified	??5.9	??8.1	??9.3	??10.4	??32.9	??53.3	??67.3	??81.8
		??F9	????337		??226	??286	Qualified	??6.2	??7.8	??9.5	??10.2	??36.4											??51.6	??70.6	??81.4

Embodiment 5

Adopting Wingdale, clay, iron powder is main raw material, mixes Rock Phosphate (72Min BPL), gypsum is introduced minor component P ₂O ₅, CaSO ₄, be mixed with cement slurry.P in the Rock Phosphate (72Min BPL) wherein ₂O ₅Content 16.6%.Each raw-meal ingredient sees Table 5-1, and the grog rate value and the mineral composition of design see Table 5-2.All mass percent in the table.

Raw material are heated up, be fired into cement clinker at 1450 ℃ ± 50 ℃, the chemical ingredients of grog sees Table 5-3, all is mass percent in the table.Clinker mineral composition behind the free calcium oxide content of grog, the rate value of grog and the deduction free calcium oxide is listed in table 5-4, find out from the free calcium oxide data, mixing under the condition of trace amounts of phosphorus, the cement clinker of high tricalcium silicate content burns till at 1450 ℃ ± 50 ℃, illustrates that grog is suitable for modern cement kiln suitability for industrialized production.The A Lite content of each grog is all up to about 70% among the table 5-4.

The grog of 95% quality and the natural dihydrate gypsum of 5% quality are mixed, grinding in ball mill, specific surface area reaches 330m ²/ kg～360m ²/ kg adopts the method for national Specification to test time of coagulation, stability and intensity, and test result is listed in table 5-5.From time of coagulation of the visible grog of result of table 5-5 than time of coagulation of common silicate cement slightly long (be 60-180 minute more common time of coagulation), but also belong to normal, meet national standard, stability is qualified, intensity is higher, and 28 days ultimate compression strength reaches or near 70MPa.

Table 5-1

Numbering	Wingdale	Clay	Iron powder	Gypsum	Rock Phosphate (72Min BPL)	Summation
							??F5	?80.9	??16.2	??1.6	????0	????1.3	?100.0
??F6	?80.1	??16.4	??1.6	????0	????1.9	?100.0
							??F7	?79.5	??16.4	??1.6	????0	????2.5	?100.0
??F8	?78.3	??16.2	??1.6	????1.4	????2.5	?100.0

Table 5-2

Numbering	Design grog rate value			Design clinker mineral one-tenth/%
									??KH	??SM	??IM	??C 3S	??C 2S	??C 3A	??C 4AF	Other
	??F5	??0.98	??2.52	??1.62	??74.0	??4.2	??8.2	??9.7									??3.9
??F6									??0.97	??2.53	??1.62	??71.7	??6.3	??8.3	??9.7	??4.1
	??F7	??0.97	??2.53	??1.62	??71.6	??6.3	??8.3	??9.6									??4.2
??F8									??0.96	??2.52	??1.61	??69.8	??6.7	??8.1	??9.5	??5.9

Table 5-3

Numbering	Grog chemical ingredients/%
									??SiO 2	??Al 2O 3	??Fe 2O 3	??CaO	??MgO	??SO 3	??P 2O 5	Other
	????F5	??20.95	??5.13	??3.18	??66.95	??2.10	??0.13	??0.32									??1.24
????F6									??21.07	??5.15	??3.18	??66.65	??2.09	??0.13	??0.47	??1.26
	????F7	??21.04	??5.15	??3.17	??66.54	??2.09	??0.13	??0.63									??1.25
????F8									??20.70	??5.06	??3.14	??66.03	??2.05	??1.12	??0.63	??1.27

Table 5-4

Numbering	Free calcium oxide %	Grog rate value			Clinker mineral composition/%
										??KH	??SM	??IM	??C 3S	??C 2S	??C 3A	??C 4AF	Other
		????F5	??0.73	??0.96	??2.52	??1.62	??70.90	??6.57	??8.23									??9.66	??4.64
????F6	??0.47									??0.96	??2.53	??1.62	??69.69	??7.81	??8.29	??9.66	??4.55
		????F7	??0.40	??0.96	??2.53	??1.62	??69.84	??7.62	??8.27									??9.64	??4.63
????F8	??0.27									??0.96	??2.52	??1.61	??68.45	??7.60	??8.11	??9.54	??6.30

Table 5-5

Numbering	Specific surface area/m 2/kg	Time of coagulation/min		Stability	Folding strength/Mpa			Ultimate compression strength/Mpa
											Initial set	Final set	??3d	??7d	??28d	??3d	??7d	??28d
		????F5	????354		??233	??283	Qualified	??5.92	??8.08	??9.18									??35.79	??52.10	??68.46
????F6	????348			??224							??267	Qualified	??5.90	??7.68	??9.35	??34.31	??49.35	??70.98
		????F7	????344		??219	??289	Qualified	??6.07	??7.79	??9.31									??34.32	??49.54	??69.73
????F8	????337			??221							??279	Qualified	??5.70	??7.63	??9.36	??34.24	??50.52	??70.91

Embodiment 6

Adopting Wingdale, clay, iron powder, slag, quartz sand is raw material, is mixed with cement slurry.P in the slag ₂O ₅Content 1.63%.Raw-meal ingredient sees Table 6-1, and the grog rate value of design and clinker mineral composition see Table 6-2.All mass percent in the table.

Raw material are heated up, be fired into cement clinker at 1450 ℃ ± 50 ℃, the chemical ingredients of grog sees Table 6-3, all is mass percent in the table.Clinker mineral composition behind the free calcium oxide content of grog, the rate value of grog and the deduction free calcium oxide is listed in table 6-4, find out from the free calcium oxide data, mixing with slag under the condition of carbamate additives for low phosphorus, the cement clinker of high tricalcium silicate content burns till at 1450 ℃ ± 50 ℃, illustrates that grog is suitable for modern cement kiln suitability for industrialized production.The A Lite content of each grog is all up to about 70% among the table 6-4.

The grog of 95% quality and the natural dihydrate gypsum of 5% quality are mixed, grinding in ball mill, specific surface area reaches 330m ²/ kg～360m ²/ kg adopts the method for national Specification to test time of coagulation, stability and intensity, and test result is listed in table 6-5.Normal from time of coagulation of the visible grog of result of table 6-5, meet national standard, stability is qualified, and intensity is higher.

Table 6-1

Numbering	Wingdale	Clay	Iron powder	Quartz sand	Slag	Summation
							F12	????73.1	??13.7	??0.0	????0.4	??12.8	??100.0
F13	????74.4	??14.0	??0.7	????0.3	??10.6	??100.0
							F14	????76.0	??14.3	??1.5	????0.2	??8.0	??100.0

Table 6-2

Numbering	Design grog rate value			Design clinker mineral one-tenth/%
									??KH	??SM	??IM	??C 3S	??C 2S	??C 3A	??C 4AF	Other
	??F12	??0.98	??1.98	??0.94	??72.3	??2.9	??4.1	??15.9									??4.2
??F13									??0.98	??1.98	??0.94	??71.9	??3.4	??4.2	??15.9	??4.7
	??F14	??0.98	??1.98	??0.94	??72.0	??3.4	??4.2	??15.9									??4.5

Table 6-3

Numbering	Grog chemical ingredients/%
											??SiO 2	??Al 2O 3	??Fe 2O 3	??CaO	??MgO	??SO 3	??CaF 2	??P 2O 5	Other
??F12	??20.03	??4.90	??5.21	??65.06	??3.37	??0.00	??0.06	??0.32	??1.05
										??F13	??20.09	??4.92	??5.23	??65.14	??3.17	??0.05	??0.05	??0.27	??1.08
??F14	??20.12	??4.94	??5.23	??65.31	??2.93	??0.12	??0.04	??0.20	??1.11

Table 6-4

Numbering	Free calcium oxide %	Grog rate value			Clinker mineral composition/%
										??KH	????SM	????IM	????C 3S	????C 2S	????C 3A	????C 4AF	Other
		????F12	??0.48	??0.97	????1.98	????0.94	????69.74	????4.79	????4.18									????15.85	????5.44
????F13	??0.55									??0.97	????1.98	????0.94	????69.63	????5.03	????4.21	????15.91	????5.22
		????F14	??0.57	??0.97	????1.98	????0.94	????69.75	????5.05	????4.25									????15.90	????5.05

Table 6-5

Numbering	Specific surface area/m 2/kg	Time of coagulation/min		Stability	Folding strength/Mpa		Ultimate compression strength/Mpa
									Initial set	Final set	??3d	????28d	????3d	????28d
		??F12	????356		????217	??284	Qualified	??5.72							????10.01	????42.14	????71.33
??F13	????345			????207					??278	Qualified	??5.36	????9.79	????40.17	????71.71
		??F14	????331		????227	??272	Qualified	??5.15							????9.54	????36.04	????68.51

Embodiment 7

Adopting Wingdale, clay, iron powder, alumina, phosphorus slag is raw material, is mixed with cement slurry.P in the phosphorus slag ₂O ₅Content 1.7%,

Be 2.47%, bring P into by phosphorus slag ₂O ₅And CaF ₂Raw-meal ingredient sees Table 7-1, and the grog rate value and the mineral composition of design see Table 7-2.

Raw material are heated up, be fired into cement clinker respectively at 1400 ℃, 1450 ℃, 1500 ℃, the chemical ingredients of grog sees Table 7-3, grog rate value behind the free calcium oxide of each temperature grog, the deduction free calcium oxide and mineral composition see Table 7-4, table 7-5 and table 7-6 respectively, all are mass percent in the table.Introducing with phosphorus slag under the condition of carbamate additives for low phosphorus, the cement clinker of high tricalcium silicate content burns till at 1450 ℃ ± 50 ℃, the tricalcium silicate content of grog all is higher than 70%, illustrates that these grogs have good burn-ability, is suitable for modern cement kiln suitability for industrialized production.

The 1450 ℃ of grogs that burn till of 95% quality and the natural dihydrate gypsum of 5% quality are mixed, grinding in ball mill, specific surface area reaches 330m ²/ kg～360m ²/ kg adopts the method for national Specification to test time of coagulation, stability and intensity, and test result is listed in table 7-7.Normal from time of coagulation of the visible grog of result of table 7-7, meet national standard, stability is qualified, and intensity is very high.

Table 7-8 is for mixing cement intensity behind different quantities and the different types of blended material.Data from table as seen, a large amount of industrial residue of these grog admixtures is as blended material, the cement of making still has very high intensity, illustrates that these grogs have good gelling.

Table 7-1

Numbering	Wingdale	Clay	Iron powder	Alumina	Phosphorus slag	Summation
							????G2	????79.7	????14.7	????1.6	????0	????4.0	??100.0
????G3	????78.4	????13.7	????1.7	????0.2	????6.0	??100.0
							????G4	????77.2	????12.6	????1.8	????0.4	????8.0	??100.0
????G5	????76.0	????11.5	????1.8	????0.6	????10.1	??100.0

The grog rate value and the mineral composition of table 7-2 design

Numbering	Design grog rate value			Design clinker mineral one-tenth/%
									????KH	????SM	????IM	????C 3S	????C 2S	????C 3A	????C 4AF	Other
	????G2	????0.96	????2.70	????1.61	????72.3	????6.9	????7.8	????9.3									????3.80
????G3									????0.96	????2.69	????1.60	????71.4	????7.6	????7.8	????9.3	????3.92
	????G4	????0.96	????2.68	????1.59	????71.7	????7.1	????7.8	????9.4									????4.03
????G5									????0.96	????2.70	????1.63	????72.2	????6.6	????7.9	????9.1	????4.14

Table 7-3

Numbering	Grog chemical ingredients/%
										?SiO 2	?Al 2O 3	?Fe 2O 3	?CaO	?MgO	?SO 3	?CaF 2	?P 2O 5	Other
	??G2	?21.41	?4.89	?3.05	?66.96	?2.14	?0.14	?0.32	?0.11										?0.98
??G3										?21.43	?4.90	?3.07	?66.80	?2.15	?0.15	?0.46	?0.16	?0.88
	??G4	?21.36	?4.90	?3.08	?66.76	?2.16	?0.16	?0.63	?0.22										?0.63
??G5										?21.32	?4.89	?3.01	?66.77	?2.18	?0.17	?0.78	?0.27	?0.61

Table 7-4

Numbering	1400 ℃ of free CaO %	Grog rate value			Mineral composition/%
										?KH	?SM	?IM	?C 3S	?C 2S	?C 3A	?C 4AF	Other
		G2	?0.35	?0.96	?2.70	?1.61	?70.74	?8.02	?7.81									?9.26	?4.17
G3	?0.16									?0.96	?2.69	?1.60	?70.60	?8.16	?7.81	?9.32	?4.11
		G4	?0.08	?0.96	?2.68	?1.59	?71.28	?7.45	?7.77									?9.36	?4.14
G5	?0.09									?0.96	?2.70	?1.63	?71.73	?7.00	?7.87	?9.14	?4.26

Table 7-5

Numbering	1450 ℃ of free CaO/%	1450 ℃ are burnt till grog rate value			1450 ℃ are burnt till mineral composition/%
										??KH	??SM	??IM	?C 3S	?C 2S	?C 3A	?C 4AF	Other
		??G2	??0.13	??0.96	??2.70	??1.61	?71.63	?7.34	?7.81									?9.26	?3.96
??G3	??0.30									??0.95	??2.69	??1.60	?70.04	?8.59	?7.81	?9.32	?4.24
		??G4	??0.08	??0.96	??2.68	??1.59	?71.28	?7.45	?7.77									?9.36	?4.14
??G5	??0.05									??0.96	??2.70	??1.63	?71.90	?6.88	?7.87	?9.14	?4.21

Table 7-6

Numbering	1500 ℃ of free CaO/%	1500 ℃ are burnt till grog rate value			1500 ℃ are burnt till mineral composition/%
										??KH	??SM	??IM	??C 3S	??C 2S	??C 3A	??C 4AF	Other
		??G2	0.26	??0.95	??2.70	??1.61	??71.57	??7.78	??7.81									??9.26	??3.58
??G3	0.06									??0.96	??2.69	??1.60	??71.01	??7.86	??7.81	??9.32	??4.00
		??G4	0.08	??0.96	??2.68	??1.59	??71.28	??7.45	??7.77									??9.36	??4.14
??G5	0.05									??0.96	??2.70	??1.63	??71.90	??6.88	??7.87	??9.14	??4.21

Table 7-7

Numbering	Specific surface area/m 2/kg	Time of coagulation/min		Stability	Folding strength/Mpa		Ultimate compression strength/Mpa
									Initial set	Final set	??3d	??28d	??3d	??28d
		??G2	????342		????98	??186	Qualified	??5.92							??10.5	??41.2	??74.5
??G3	????360			????112					??188	Qualified	??6.11	??10.3	??40.6	??75.2
		??G4	????355		????105	??201	Qualified	??6.05							??10.8	??40.5	??73.1
??G5	????336			????109					??195	Qualified	??5.88	??10.1	??40.0	??70.6

Table 7-8

Grog		Blended material		Specific surface area/m 2/kg	Time of coagulation/min		Stability	Folding strength/Mpa		Ultimate compression strength/Mpa
												Numbering	Volume/%	Kind	Volume/%	Initial set	Final set	3 days	28 days	3 days	28 days
G2	?80	Slag	15		??378	??124		??188	Qualified	5.7	?10.3											?40.6	?75.2
				G2			?75					Flyash	20	??384	??135	??212	Qualified	5.5	?9.8	?39.3	?74.2
G2	?60	Light-burned coal gangue	35		??392	??115		??175	Qualified	5.6	?9.7											?38.6	?72.8
				G3			?75					Slag	20	??368	??136	??198	Qualified	5.8	?10.2	?40.3	?73.6
G3	?60	Slag	35		??395	??168		??226	Qualified	5.6	?9.9											?38.5	?71.6
				G3			?45					Slag	50	??380	??182	??268	Qualified	4.2	?8.5	?33.6	?65.1
G4	?40	Slag	50		??378	??175		??233	Qualified	4.8	?9.2											?36.5	?69.5

?G4	?30	Slag	60	??384	??251	??335	Qualified	4.1	?8.8	?34.1	?67.6
												?G4	?25	Slag	70	??388	??285	??357	Qualified	3.5	?8.2	?32.2	?66.2
?G5	?65	Flyash	30	??390	??188	??256	Qualified	4.6	?8.8	?33.5	?68.2
												?G5	?55	Flyash	40	??395	??216	??276	Qualified	4.1	?7.9	?31.6	?64.2
?G5	?45	Flyash	50	??379	??258	??343	Qualified	3.9	?7.8	?28.7	?60.0

Embodiment 8

Adopting Wingdale, clay, iron powder is main raw material, mixes phosphorus slag, phosphorus mine tailing, fluorite, slag etc. and introduces P ₂O ₅With fluorine as minor component, be mixed with cement slurry.P in the phosphorus slag ₂O ₅Content 1.6%, F ^-Be 2.53%.P in the slag ₂O ₅Content is 1.2% and CaF ₂Content is 0.5%.P in the phosphorus mine tailing ₂O ₅Content is that 2.5% raw-meal ingredient sees Table 8-1, and the grog rate value and the mineral composition of design see Table 8-2.

Raw material are heated up, be fired into cement clinker at 1450 ℃ ± 50 ℃, the chemical ingredients of grog sees Table 8-3, all is mass percent in the table.Grog rate value and clinker mineral composition behind the free calcium oxide content of grog, the deduction free calcium oxide are listed in table 8-4, find out from the free calcium oxide data, are mixing introducing P such as phosphorus slag, phosphorus mine tailing, fluorite, slag ₂O ₅Under the condition of fluorine as minor component, the cement clinker of these high tricalcium silicate content can burn till fully at 1450 ℃ ± 50 ℃.The A Lite content of each grog is all up to 66%～73% among the table 8-4.

The grog of 95% quality and the natural dihydrate gypsum of 5% quality are mixed, grinding in ball mill, specific surface area reaches 310m ²/ kg～350m ²/ kg adopts the method for national Specification to test time of coagulation, stability, and test result is listed in table 8-5, and strength detection the results are shown in Table 8-6, and is normal from the time of coagulation of the visible grog of these results, meets national standard, and stability is qualified, and very high intensity is arranged.

Table 8-1

Numbering	Wingdale	Clay	Iron powder	Phosphorus slag	Fluorite	The phosphorus mine tailing	Slag	Summation
									??H3	??77.5	????12.8	????0.3	????6.0	????0	????0	????3.4	??100.0
??H5	??78.8	????13.7	????1.5	????6.0	????0	????0	????0	??100.0
									??H6	??74.6	????13.7	????1.5	????6.0	????0	????4.2	????0	??100.0
??H7	??78.8	????13.7	????1.5	????6.0	????0.5	????0	????0	??100.0
									??H9	??71.1	????13.8	????0.7	????0	????0	????8.4	????0	??100.0
??H10	??74.1	????16.8	????0.7	????5.0	????0	????8.4	????0	??100.0

Table 8-2

	Design grog rate value			Design clinker mineral composition/%
									Numbering	??KH	??SM	??IM	??C 3S	??C 2S	??C 3A	??C 4AF	Summation
??H3	??0.968	??2.03	??1.65	??68.9	??5.5	??10.0	??11.4	??95.71
									??H5	??0.974	??2.81	??1.64	??74.9	??4.8	??7.6	??8.8	??96.12
??H6	??0.974	??2.81	??1.64	??74.8	??4.8	??7.6	??8.7	??95.96
									??H7	??0.974	??2.81	??1.64	??74.9	??4.8	??7.6	??8.8	??96.12
??H9	??0.967	??2.80	??2.18	??73.0	??6.1	??9.8	??7.3	??96.24
									??H10	??0.967	??2.80	??2.18	??73.0	??6.1	??9.8	??7.3	??96.24

Table 8-3

Numbering	Grog chemical ingredients/%
									??SiO 2	??Al 2O 3	??Fe 2O 3	??CaO	????MgO	??SO 3	??CaF 2	??P 2O 5
	??H3	??20.05	??6.15	??3.73	??65.82	????2.68	??0.04	??0.31									??0.24
??H5									??21.39	??4.72	??2.88	??67.23	????2.15	??0.14	??0.14	??0.15
	??H6	??21.36	??4.71	??2.88	??67.12	????2.15	??0.14	??0.30									??0.23
??H7									??21.39	??4.72	??2.88	??67.23	????2.15	??0.14	??0.14	??0.15
	??H9	??21.35	??5.23	??2.40	??67.30	????2.08	??0.06	??0.32									??0.24
??H10									??21.35	??5.23	??2.40	??67.30	????2.08	??0.06	??0.32	??0.24

Table 8-4

	1450 ℃ of free CaO/%	1450 ℃ are burnt till grog rate value			1450 ℃ are burnt till clinker mineral composition/%
											????KH	??SM	??IM	??C 3S	??C 2S	??C 3A	??C 4AF	????CaSO 4	Add up to
		?H3	??0.62	????0.96	??2.03	??1.65	??66.27	??7.47	??9.98	??11.35										????0.06	??95.13
?H5	??1.00										????0.96	??2.81	??1.64	??70.72	??7.98	??7.64	??8.76	????0.23	??95.33
		?H6	??1.46	????0.95	??2.81	??1.64	??68.70	??9.41	??7.63	??8.75										????0.23	??94.72
?H7	??0.48										????0.97	??2.81	??1.64	??72.83	??6.38	??7.64	??8.76	????0.23	??95.85
		?H9	??0.85	????0.95	??2.80	??2.18	??69.43	??8.84	??9.80	??7.29										????0.10	??95.47
?H10	??0.27										????0.96	??2.80	??2.18	??71.79	??7.06	??9.80	??7.29	????0.10	??96.05

Table 8-5

Numbering	Fineness		Time of coagulation/min		Stability
						0.080 μ m tails over/%	Specific surface area/m 2/kg	Initial set	Final set
	????H3	???3.92	????315.5	????166						????241	Qualified
????H5					???1.20	????345.7	????182	????248	Qualified
	????H6	???2.03	????303.1	????159						????255	Qualified
????H7					???1.81	????326.8	????292	????354	Qualified
	????H9	???2.03	????329.0	????155						????228	Qualified
????H10					???1.56	????341.2	????158	????222	Qualified

Table 8-6

Numbering	Folding strength/Mpa				Ultimate compression strength/Mpa
									????3d	????7d	????28d	????90d	????3d	????7d	????28d	????90d
	????H3	????6.39	????8.26	????9.41	????10.53	????36.72	????50.90	????72.88									????75.71
????H5									????6.88	????8.49	????10.22	????10.17	????41.41	????57.66	????78.11	????77.57
	????H6	????7.06	????9.10	????10.10	????9.81	????42.70	????57.87	????74.48									????81.53
????H7									????7.03	????9.16	????10.82	????11.10	????42.60	????61.19	????84.76	????85.54
	????H9	????6.03	????8.59	????10.09	????10.38	????31.84	????46.89	????66.85									????75.74
????H10									????7.20	????9.20	????11.09	????10.84	????41.01	????56.46	????72.99	????79.09

Embodiment 9

Adopting Wingdale, clay, iron powder, quartz sand, flyash is raw material, mixes Rock Phosphate (72Min BPL) and phosphorus slag and introduces minor component P ₂O ₅, mix fluorite and introduce CaF ₂, be mixed with cement slurry.Each raw-meal ingredient sees Table 9-1.

Raw material are heated up, be fired into cement clinker at 1450 ℃, the chemical ingredients of grog sees Table 9-2, and the free calcium oxide of grog, rate value and mineral composition see Table 9-3, and the content of A Lite is all about 70% in the grog.

The grog of 95% quality and the natural dihydrate gypsum of 5% quality are mixed, grinding in ball mill, specific surface area sees Table 9-4, adopts the method test intensity of national Specification, the results are shown in table 9-5.Reached very high intensity from the visible grog of result of table 9-5.

Table 9-1

Numbering	Wingdale	Clay	Iron powder	Rock Phosphate (72Min BPL)	Flyash	Phosphorus slag	Fluorite
								????I8	????73.6	????11.3	????1.8	????0	????1.3	????9.2	????0.4
????I9	????80.2	????16.3	????1.6	????1.5	????0	????0	????0.4

Table 9-2

Numbering	Grog chemical ingredients/%
									????SiO 2	????Al 2O 3	????Fe 2O 3	????CaO	????MgO	????SO 3	????CaF 2	????P 2O 5
	????I8	????20.95	????5.10	????3.13	????66.18	????2.12	????0.16	????0.82									????0.46
????I9									????20.91	????5.12	????3.16	????66.40	????2.08	????0.13	????0.61	????0.35

Table 9-3

Numbering	1450 ℃ of free CaO/%	Grog rate value			Clinker mineral composition/%
											??KH	??SM	??IM	??C 3S	????C 2S	????C 3A	????C 4AF	????CaSO 4	Add up to
		????I8	0.19	??0.96	??2.54	??1.63	??70.10	????7.17	????8.24	????9.51										????0.28	??95.30
????I9	0.30										??0.96	??2.53	??1.62	??70.80	????6.53	????8.22	????9.61	????0.22	??95.38

Table 9-4

Numbering	Time of coagulation/min		Fineness		Stability
						Initial set	Final set	0.080 tail over/%	Specific area/m 2/kg
	I8	??251	????354	????4.4						????312.2	Qualified
I9					??213	????280	????6.3	????327.9	Qualified

Table 9-5

Numbering	Folding strength/Mpa				Ultimate compression strength/Mpa
									??3d	??7d	??28d	??90d	??3d	??7d	??28d	??90d
	??I8	??7.28	??8.81	??10.19	??10.88	??42.5	??57.9	??75.6									??81.4
??I9									??6.80	??8.74	??10.34	??10.49	??41.1	??56.5	??76.6	??83.3

Embodiment 10

Wingdale, the clay of the new Wingdale that produces of employing China, clay, iron powder, crossdrift product are main raw material respectively, are correction material with quartz sand, flyash, mix Rock Phosphate (72Min BPL), phosphorus mine tailing, phosphorus slag introducing minor component P ₂O ₅, mix fluorite and introduce CaF ₂, be mixed with cement slurry.Each raw-meal ingredient sees Table 10-1 and table 10-2.

Raw material are fired into cement clinker at 1450 ℃, and the chemical ingredients of grog sees Table 10-3, and the free calcium oxide of grog is less than 1%, and the rate value and the mineral composition of grog see Table 10-4, and the content of A Lite is all about 70% in the grog.

The grog of 95% quality and the natural dihydrate gypsum of 5% quality are mixed, grinding in ball mill, specific surface area sees Table 10-5, adopts the method test intensity of national Specification, the results are shown in table 10-5.Reached very high intensity from the visible grog of result of table 10-5.Wherein the K1S1 sample is that K1 grog 65%+ gypsum 5%+ slag 30% is formulated, as seen mix 30% slag after cement intensity still very high.

The high quality cement clinker of K7 cement clinker and original cement mill ordinary production is compared, the results are shown in table 10-6.The new cement of table 10-6 China is meant the high-quality portland cement clinker in existing cement mill, the cement clinker that K7 fires for the present invention.Mix 40% burnt coal gangue respectively, and mix 5% natural dihydrate gypsum respectively, make cement, measure strength of cement, the results are shown in table 10-6, the strength of cement that the grog that visible the present invention burns till is made is higher, about the high 10MPa of intensity than existing high grade cement, even mix 40% coal gangue %, ultimate compression strength still can reach 66MPa in 28 days.

Table 10-1

Numbering	The new Wingdale of China	The new clay of China	The new iron powder of China	Rock Phosphate (72Min BPL)	Phosphorus slag	Flyash	Quartz sand	The phosphorus mine tailing	Fluorite
										??K1	??78.8	??13.7	??1.5	????0	????6.0	????0	????0	????0	????0.4
??K4	??82.0	??14.2	??1.4	????0.7	????0	????0	????1.7	????0	????0.4
										??K7	??77.3	??14.1	??1.6	????0	????0	????1.0	????0	????6.0	????0.4

Table 10-2

Numbering	Raw-meal ingredient/%
								The crossdrift Wingdale	The crossdrift stone coal slag	The new iron powder of China	The crossdrift Rock Phosphate (72Min BPL)	Phosphorus slag	Flyash	Fluorite
	??K2	??82.8	??11.7	??1.4	??0.7	????0	????3.4								????0.4
??K3								??80.0	??8.7	??1.6	??0	????6.1	????3.6	????0.4

Table 10-3

Numbering	Grog chemical ingredients/%
										??SiO 2	??Al 2O 3	??Fe 2O 3	??CaO	??MgO	??SO 3	??CaF 2	??P 2O 5	Add up to
	??K1	??21.39	??4.72	??2.88	??67.23	??2.15	??0.14	??0.14	??0.12										??98.78
??K2										??20.87	??4.62	??2.83	??65.56	??2.20	??0.34	??0.27	??0.21	??96.90
	??K3	??21.10	??4.68	??2.86	??66.08	??2.20	??0.31	??0.14	??0.12										??97.50
??K4										??21.26	??4.70	??2.88	??66.76	??2.07	??0.11	??0.27	??0.21	??98.26
	??K7	??20.51	??5.40	??3.29	??65.67	??3.51	??0.13	??0.11	??0.09										??98.70

Table 10-4

Numbering	Grog rate value			Clinker mineral composition/%
									????KH	????SM	????IM	????C 3S	????C 2S	????C 3A	????C 4AF	Summation
	????K1	????0.974	????2.81	????1.64	????74.9	????4.8	????7.6	????8.8									????96.12
????K2									????0.970	????2.80	????1.64	????72.3	????5.3	????7.5	????8.6	????93.63
	????K3	????0.967	????2.80	????1.64	????72.3	????6.0	????7.6	????8.7									????94.49
????K4									????0.973	????2.81	????1.63	????74.2	????4.9	????7.6	????8.7	????95.50
	????K7	????0.967	????2.36	????1.64	????70.1	????5.9	????8.7	????10.0									????94.75

Table 10-5

Numbering	Specific surface area/m 2/kg	Folding strength/Mpa			Ultimate compression strength/Mpa
								????3d	????7d	????28d	????3d	????7d	????28d
		?K1	????458	????7.51	????8.33	????9.91	????44.1							????60.9	????77.3
?K1S1	????407							????6.02	????7.84	????10.41	????29.2	????46.6	????71.2
		?K2	????479	????8.19	????8.20	????10.13	????46.1							????62.7	????81.4
?K3	????491							????8.07	????8.70	????10.27	????48.2	????61.0	????80.2
		?K4	????488	????8.42	????8.73	????9.98	????51.7							????65.6	????81.2
?K7	????514							????8.21	????8.10	????9.58	????52.1	????66.0	????79.2

Table 10-6

Grog		Blended material		Specific surface area/m 2/kg	Folding strength/Mpa			Ultimate compression strength/Mpa
											Numbering	Consumption/%	Kind	Volume/%	??3d	??7d	??28d	??3d	??7d	??28d
K7	???95	Do not have	???0		????362	??6.77	??8.93	??10.65	??38.6	??56.3											??78.2
				K7							???55	Coal gangue	???40	????362	??4.91	??7.26	??9.66	??22.4	??40.6	??66.7
The new cement of China	???95	Do not have	???0		????386	??5.27	??6.90	??9.22	??33.2	??45.8											??64.5
				The new cement of China							???55	Coal gangue	???40	????407	??4.82	??6.55	??8.10	??23.1	??32.5	??55.6

Embodiment 11

With Wingdale, clay, slag, iron powder, phosphorus slag, fluorite and sandstone batching, burn till two grogs at 1400 ℃～1550 ℃, their rate value is identical with mineral composition, lists in table 11-1.Difference is that the grog comparative sample do not mix P and F in raw material, another sample in raw material admixture a small amount of P and F, in grog, contain 0.3%P ₂O ₅And 0.7%CaF ₂With 95% grog and the common grinding of 5% dihydrate gypsum to specific surface area 350 ± 10m ²/ kg measures intensity results and lists in table 11-2.As seen, the grog mesosilicic acid DFP that contains trace P and F is based on the R crystal formation of tripartite crystal formation and the mixture (referring to Fig. 4) of M1 crystal formation, more than its 28 days high 5MPa of compressive strength rate comparative sample.

Table 11-1

Grog rate value			Mineral composition/w%
							????LSF	????SM	????IM	????C 3S	????C 2S	????C 3A	????C 4AF
????0.99	????2.56	????1.63	????71.6	????6.2	????8.6	????9.4

Table 11-2

Sample	??C 3The S crystal formation	Time of coagulation/min		Folding strength/MPa			Ultimate compression strength/MPa
										Initial set	Final set	??3d	??7d	??28d	??3d	??7d	??28d
		Comparative sample	??M 1+T 3	??151	??301	??5.48	??7.03	??9.47	??31.3									??45.4	??64.8
Mix the F+P sample	??R+M 1									??226	??286	??6.15	??7.81	??9.48	??36.42	??51.58	??70.6

Embodiment 12

With Wingdale, clay, slag, iron powder, phosphorus slag, fluorite and bauxitic clay batching, burn till three grogs at 1400 ℃～1550 ℃, their rate value is identical with mineral composition, lists in table 12-1.Difference is to contrast the grog sample and does not mix P and F in raw material, grog sample in raw material admixture a small amount of P, also grog sample in raw material simultaneously admixture a small amount of P and F.These contained hotchpotch quantity are listed in table 12-2 in grog.These three grogs do not belong to the cement clinker of high tricalcium silicate, and present embodiment relatively mixes to the influence of clinker strength.With 95% grog and the common grinding of 5% dihydrate gypsum to specific surface area 350 ± 10m ²/ kg measures intensity results and lists in table 12-2.As seen, contain trace ^P(0.4%P ₂O ₅) grog mesosilicic acid DFP be the mixture (referring to Fig. 4) of the M1 crystal formation of tripartite R crystal formation and monocline, about its 28 days high 5MPa of compressive strength rate comparative sample.Contain trace P and F (0.4%P ₂O ₅+ 0.6%CaF ₂) grog mesosilicic acid DFP be R crystalline substance (referring to Fig. 3) based on trigonal system, about its 28 days high 10MPa of compressive strength rate comparative sample.

Table 12-1

Grog rate value			Clinker mineral composition/w%
							?LSF	?SM	?IM	?C 3S	?C 2S	?C 3A	?C 4AF
?0.93	?2.18	?1.66	?53.73	?20.42	?9.91	?11.16

Table 12-2

Sample	C 3The S crystal formation	Time of coagulation/min		Folding strength/MPa			Ultimate compression strength/MPa
										Initial set	Final set	?3d	?7d	?28d	?3d	?7d	?28d
		The contrast grog	M1+T3	?208	?305	?4.1	?5.4	?8.6	?23.2									?25.4	?53.7
Contain 0.4%P 2O 5Grog	R+M									?271	?391	?5.9	?6.9	?8.7	?29.2	?41.0	?58.6
		Contain 0.4%P 2O 5+0.6％CaF 2Grog	R	?232	?326	?6.2	?7.2	?9.0	?33.0									?42.1	?63.6

Claims (8)

1, a kind of high strength silicate clinker is characterized in that, wherein contains trace amounts of phosphorus or trace amounts of phosphorus and Trace Fluoride, and the tricalcium silicate of weight percent 66%～76%, and tricalcium silicate is the mixture of trigonal lattice or trigonal lattice and monoclinic lattice.

2, high strength silicate clinker according to claim 1 is characterized in that, it comprises following component, by weight the percentage ratio meter:

Tricalcium silicate, i.e. C ₃S 66%～76%;

Dicalcium Phosphate (Feed Grade), i.e. C ₂S 3～15%;

Tricalcium aluminate, i.e. C ₃A 3～12%;

Tetracalcium aluminoferrite, i.e. C ₄AF 6～14%;

Free calcium oxide, promptly f-CaO 0～1.2%; And

Surplus is other phase; Wherein, described trace amounts of phosphorus is with P ₂O ₅Count 0.05%～0.9%, described Trace Fluoride is with CaF ₂Count 0～1.5%.

3, high strength silicate clinker according to claim 1 is characterized in that, described tricalcium silicate weight percent is 69%～74%.

4, the preparation method of high strength silicate clinker is characterized in that, mixes P contained compound or P contained compound and fluorochemicals as burning till admixture in raw material, and firing range is 1400 ℃～1550 ℃; Wherein, the P contained compound incorporation is with P ₂O ₅The weight percent that meter accounts for raw material is 0.1%～0.7%, and fluorochemicals is with F ^-The weight percent that meter accounts for raw material is 0%～1.2%.

According to the preparation method of the described high strength silicate clinker of claim 4, it is characterized in that 5, P contained compound and fluorochemicals incorporation are with P ₂O ₅Count 0.2～0.4%, fluorochemicals is with F ^-Count 0～1.0%.

6, according to the preparation method of claim 4 or 5 described high strength silicate clinkers, it is characterized in that, described P contained compound is to be selected from Rock Phosphate (72Min BPL), phosphorus mine tailing, phosphorus slag, the slag one or more, described fluorochemicals is for being selected from fluorite, fluorite mine tailing, one or more in Sodium Silicofluoride, fluorgypsum and the fluorine-containing industrial residue.

7, according to the preparation method of claim 4 or 5 described high strength silicate clinkers, it is characterized in that, in the raw material of 90～96wt%, add the phosphorus slag of 4～12wt%, wherein P in the phosphorus slag ₂O ₅Content 1.2%～2%, F ^-Be 2～3%, bring P into by phosphorus slag ₂O ₅And CaF ₂, firing range is 1400 ℃～1550 ℃; Wherein each weight percentages of components is in the raw material: CaO=66.5%～67.1%, SiO ₂=21.2%～21.5%, Al ₂O ₃=4.7%～5.1%, Fe ₂O ₃=2.9%～3.3%, remain and be other compositions.

8, according to the preparation method of claim 4 or 5 described high strength silicate clinkers, it is characterized in that, add the Rock Phosphate (72Min BPL) of 4～10wt% in the raw material of 90～96wt%, firing range is 1400 ℃～1550 ℃; Wherein each weight percentages of components is in the raw material:

CaO=66.4%～67.3%, SiO ₂=21.1%～21.6%, Al ₂O ₃=4.3%～5.4%, Fe ₂O ₃=2.6%～3.6%, remain and be other compositions.

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