CN106746803A - Coal ash instead clay makees correction material - Google Patents

Abstract

Coal ash instead cement makees Binder Materials for mass concrete.Coal ash instead clay makees correction material, when that in manufacture of cement, when the dioxide-containing silica of clay is higher, can be used by using coal ash instead part of clay, the KH values of raw material, n, p value is adjusted as clay correction material.Flyash of the present invention is by the reasonable coordination ratio with silicon raw material clay high; the match ratio of cement slurry can be optimized; while optimized mix-proportion; coal consumption can also be reduced; the generation of liquid phase is burnt till in promotion; reduce the dispensing of ferriferous raw material; lime saturation factor is improved, more silicate minerals are produced, the early strength and later strength of clinker is improved; protect clay resource; expand flyash and use approach, more soils are protected while production cost is reduced, meet the industrial policy of country; while solving industrial waste, clinker product quality is improved.

Description

Coal ash instead clay makees correction material

Technical field

The present invention relates to flyash applied technical field, specifically a kind of coal ash instead clay makees correction material.

Background technology

In manufacture of cement, because the place of production is different, cause the chemical composition of clay also different, particularly in clay two It is larger on the dispensing influence in manufacture of cement when silica is changed greatly, and flyash is the catching from the flue gas after coal combustion The fine ash got off, flyash is the primary solids waste of coal-burning power plant's discharge.With the development of power industry, the powder of coal-burning power plant Coal ash discharge capacity increases year by year, as one of larger industrial residue of the current discharge capacity of China.If not processed its meeting rationally Certain environmental pollution is caused, certain wasting of resources can be caused again, therefore, corrected we have proposed coal ash instead clay Raw material.

The content of the invention

Make correction material it is an object of the invention to provide a kind of coal ash instead clay, it passes through flyash and silicon raw material high The reasonable coordination ratio of clay, can optimize the match ratio of cement slurry, can reduce coal consumption, improve early strength and the later stage of clinker Intensity, protects clay resource, while solving industrial waste, improves clinker product quality.

The purpose of the present invention is achieved through the following technical solutions：Coal ash instead clay makees correction material, its scheme It is as follows：

When in manufacture of cement, when the dioxide-containing silica of clay is higher, being used by using coal ash instead part of clay, with The KH values of raw material are adjusted as clay correction material, n, p value, specific replacement match somebody with somebody such as table 2；

Coal ash instead clay makees correction material proportioning, table 2

	Lime stone	Clay	Flyash	Iron powder	Anthracite	Amount to
							Common raw-meal ingredient	72	12	/	3.0	13.0	100
Flyash makees correction material proportioning	72	8.2	4.2	2.8	12.8	100

Beneficial effects of the present invention：Flyash of the present invention can optimize cement by the reasonable coordination ratio with silicon raw material clay high The match ratio of raw material, while optimized mix-proportion, moreover it is possible to reduce coal consumption, the generation of liquid phase is burnt till in promotion, reduces ferriferous raw material Dispensing, improve lime saturation factor, produce more silicate minerals, improve the early strength and later strength of clinker, protect Clay resource is protected, has been expanded flyash and is used approach, more soils have been protected while production cost is reduced, met country Industrial policy, solve industrial waste while, improve clinker product quality.

Specific embodiment

Experiment raw material：

Lime stone

Clay

Flyash（0.045 tails over 58.2）

Iron powder

Anthracite.

Test apparatus：

Disc mill

500*500 test mills

Blain specific surface instrument

Electronic analytical balance（A ten thousandth）

Electronic analytical balance（One thousandth）

High temperature furnace

Drying box

Sealed type sample pulverizer, analysis sampling machine

Silver crucible

Hydrochloric acid

NaOH

Phenolphthalein indicator

Nitric acid

Sulfuric acid

Sulfosalicylic acid sodium salt

Copper sulphate

Ammoniacal liquor

NaAc_HAc buffer solution

PAN indicator

Potassium chloride

Quantitative filter paper

Sodium potassium tartrate tetrahydrate.

Test procedure：

1st, 100g is weighed respectively by the clay of drying and the sample of flyash, then is respectively put into analysis sampling machine crush 3-5 points Clock, big particle is screened out with 0.08, is weighed residue on sieve and is performed an analysis use.

2nd, the sample 0.5g dried in 105-1100C accurately is weighed, is placed in silver crucible.Plus 2g natrium carbonicum calcinatums, Stirred with thin glass bar, then spreading a thin layer sodium carbonate above, cover crucible cover, be placed on blowtorch and 4-5 is heated with weak fire Minute, by GB/T176-1996 Method for chemical analysis of cement, the chemical composition of clay and flyash is determined respectively.

3rd, the chemical composition such as table 1 of flyash and clay is measured：

	Loss	SiO2	Fe2O3	Al2O3	CaO	MgO	Acid non-soluble substance
								Clay	6.12	66.82	5.58	16.01	1.61	1.22	2.64
Flyash	2.86	48.4	5.12	37.31	5.60	1.35	2.22
								Pocket clay	5.12	72.08	4.02	15.84	1.68	1.34	2.52

4th, the silica of unselected clay is 66.82, and the silica of pocket clay is 72.08, clay ingredient scheme at this moment Adjustment is just needed, and the silica of flyash is 48.4, after adding flyash in the ratio of table 2, as clay correction material, energy The KH values of regulation raw material, n, p value are played well.

Coal ash instead clay makees correction raw material ratio, table 2

	Lime stone	Clay	Flyash	Iron powder	Anthracite	Amount to
							Common raw-meal ingredient	72	12	/	3.0	13.0	100
Flyash makees correction material proportioning	72	8.2	4.2	2.8	12.8	100

Fine coal ash composition and silicate component are close, can also play crystal seed effect, are played in the calcination process of clinker Induce the generation in advance of silicate mineral, reduction to burn till heat consumption, reduce fuel, while saving production cost.Through experiment, part is used Coal ash instead clay makees correction raw material, can save fire coal, because the iron in flyash can also substitute a small amount of iron powder, from reality In the production of border, correction raw material are made with flyash, while production is saved, the clinker of high yield, high-quality can be produced, because Flyash also acts as certain catalyst action, plays inducing action, occurs liquid phase in advance.

Conclusion：

1st, flyash can optimize the match ratio of cement slurry by the reasonable coordination ratio with silicon raw material clay high.

2nd, when flyash is made clay correction material and used, while optimized mix-proportion, moreover it is possible to reduce coal consumption, promote to burn till The generation of liquid phase, reduces the dispensing of ferriferous raw material, improves lime saturation factor, produces more silicate minerals, improves clinker Early strength and later strength.

3rd, rational part coal ash instead clay makees correction raw material, protects clay resource, expands flyash and uses Approach, more soils are protected while production cost is reduced, and meet the industrial policy of country, solve the same of industrial waste When, improve clinker product quality.

Claims (1)

1. coal ash instead clay makees correction material, it is characterised in that scheme is as follows：

When in manufacture of cement, when the dioxide-containing silica of clay is higher, being used by using coal ash instead part of clay, with The KH values of raw material are adjusted as clay correction material, n, p value, specific replacement match somebody with somebody such as table 2；

Coal ash instead clay makees correction material proportioning, table 2

。