CN106116608B - A kind of non-ferrous smelting furnace forsterite-carbon gunning refractory - Google Patents
A kind of non-ferrous smelting furnace forsterite-carbon gunning refractory Download PDFInfo
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- CN106116608B CN106116608B CN201610492625.3A CN201610492625A CN106116608B CN 106116608 B CN106116608 B CN 106116608B CN 201610492625 A CN201610492625 A CN 201610492625A CN 106116608 B CN106116608 B CN 106116608B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
- C04B35/20—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in magnesium oxide, e.g. forsterite
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
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Abstract
The invention discloses a kind of non-ferrous smelting furnace forsterite carbon gunning materials.It is indicated with weight percentage, the forsterite carbon gunning material is mainly by the synthetic forsterite sand 30~60% that raw material granularity is 0 3mm, and granularity is the medium-grade magnesite 10~30% of 2 4mm, and granularity is<The fused magnesite 10~30% of 0.088mm, bonding agent 5~15% and additive 6~20% form.Fine powder raw material, bonding agent and the additive weighed first is added double worm mixer and is pre-mixed, and obtains premix；The particulate material weighed is added in edge mill and is stirred, the premix being then added mixes again so that each ingredient of gunning refractory is uniformly mixed, and is discharged and is packed after mixing.Gunning refractory of the present invention is mainly used for nonferrous smelting converter or reverberatory furnace, has many advantages, such as good anti-erosion, impermeable, resistance to flaking, and adhesive rate is high, is easy to spray repair.
Description
One, technical field：
The present invention relates to a kind of non-ferrous smelting furnace furnace lining gunning refractories, and in particular to a kind of non-ferrous smelting furnace forsterite-
Carbon gunning material.
Two, background technology：
In recent years, with the fast development of the coloured industry in China, coloured smelting factory constantly adopts new technology, new technology,
The enlargement of non-ferrous smelting furnace simultaneously and efficient development, propose fire proof material of furnace lining new performance requirement, to make stove
The use environment of lining refractories is harsher.In nonferrous heavy metal smelting process, the erosion of iron white residue, high-temperature fusant rush
The infiltration of brush and metal bath, makes refractory lining serious structure spalling frequent occurrence, and kiln is forced to be had to halt production fettling,
But the blowing out of frequency is repaired, and the service life delay production of kiln, while also consuming energy is not only lost.Therefore, it is badly in need of
A kind of hot gunning refractory of non-ferrous smelting furnace furnace lining of developmental research can effectively delay the damage phase of smelting furnace, improve the furnace lining longevity
Life reduces medium-capital overhauling expense, ensures production continuous operation.
The solid waste generated when magnesite tailings are Brick With Magnesite Purified By Flotations exploits the magnesite tailings quantity generated when magnesite
More and take up a large area, pollute environment, main chemical compositions are magnesia, silica and carbon dioxide.
Three, invention content：
The technical problem to be solved by the present invention is to：A kind of non-ferrous smelting furnace forsterite-carbon gunning refractory is provided.This hair
Bright gunning refractory is used using the forsterite sand for discarding magnesite tailings synthesis as raw material, not only improves environmental protection and magnesia resource again
It is raw, and develop a kind of hot gunning refractory suitable for non-ferrous smelting furnace lining repairing, and gunning refractory of the present invention with intensity height,
The excellent properties such as impermeabilisation and resistant to corrosion.
To solve the above-mentioned problems, the technical solution that the present invention takes is：
The present invention provides a kind of non-ferrous smelting furnace forsterite-carbon gunning refractory, is indicated with weight percentage, described
Forsterite-carbon gunning refractory is mainly by the synthetic forsterite sand 30~60% that raw material granularity is 0-3mm, granularity 2-4mm
Medium-grade magnesite 10~30%, granularity is<The fused magnesite 10~30% of 0.088mm, bonding agent 5~15% and additive 6~
20% composition.
According to above-mentioned non-ferrous smelting furnace forsterite-carbon gunning refractory, the synthetic forsterite sand is by following
Method is prepared：
A, first by magnesite tailings, silica flour and light-burning magnesium powder be placed in ball mill distinguish it is levigate extremely<0.044mm；
B, granularity is equal after will be levigate<62~80wt% of mine tailing, 10~25wt% of silica flour and the light-burning magnesium powder of 0.044mm
8~15wt%, tri- kinds of raw material fine powders are added in three-dimensional material mixer, are sufficiently mixed uniformly, and incorporation time is 10~20 minutes；
C, the powder mixture compacting glomeration being uniformly mixed step b or block-like solid blank, the body of solid blank
Product density>2.30g/cm3；Solid blank spontaneously dry or leads to heated-air drying in drier, pellet is obtained after dry
Or material block；
D, the obtained pellets of step c or material block are placed in hyperthermia tunnel Kiln in oxidizing atmosphere and are roasted, roasting temperature
Degree is 1580~1750 DEG C, and roasting soaking time is 3~6h, is cooled down after roasting, obtains synthetic forsterite pellet or material
Block；
E, the synthetic forsterite pellet obtained after cooling or material block are subjected to broken classification, the conjunction of granularity required for obtaining
At forsterite.
According to above-mentioned non-ferrous smelting furnace forsterite-carbon gunning refractory, powdery is mixed using pressure ball equipment in step c
Close material compacting glomeration；Solid blank is dried using natural drying mode.
According to above-mentioned non-ferrous smelting furnace forsterite-carbon gunning refractory, in the obtained synthetic forsterite sand
MgO mass percentages >=60%, SiO2Mass percentage >=30%, the sum of mass percentage of various composition are
100%.
According to above-mentioned non-ferrous smelting furnace forsterite-carbon gunning refractory, the bonding agent be sodium tripolyphosphate, six partially
Two or more in sodium phosphate, silicon powder and aluminous cement.
According to above-mentioned non-ferrous smelting furnace forsterite-carbon gunning refractory, the bonding agent by sodium tripolyphosphate, six partially
Sodium phosphate, silicon powder and aluminous cement composition, the weight percentage shared by each ingredient be respectively sodium tripolyphosphate 1~
10%, calgon 15~40%, silicon powder 20~60% and aluminous cement 10~60%.
According to above-mentioned non-ferrous smelting furnace forsterite-carbon gunning refractory, the additive is caustic-calcined magnesite, talcum
Powder, boron oxide B2O3, silicon carbide, pelletted pitch and lithium carbonate LiCO3At least one of.
According to above-mentioned non-ferrous smelting furnace forsterite-carbon gunning refractory, the additive is by raw material caustic-calcined magnesite, cunning
Mountain flour, boron oxide B2O3, silicon carbide, pelletted pitch and lithium carbonate LiCO3Composition, each raw material weight percentage composition proportioning are：Granularity
<The caustic-calcined magnesite 30~60% of 0.088mm, granularity<The talcum powder 5~20% of 0.088mm, granularity<The B of 0.088mm2O31~
10%, granularity<The silicon carbide 10~30% of 0.088mm, the pelletted pitch 5~15% and granularity that granularity is 0.1-0.45mm<
The lithium carbonate LiCO of 0.088mm32~7%.
Additionally, it is provided a kind of preparation method of non-ferrous smelting furnace with forsterite-carbon gunning refractory, the preparation method packet
Include following steps：
A, various raw materials, bonding agent and addition are weighed first, in accordance with the ratio of above-mentioned forsterite-carbon gunning refractory
Agent；
B, double worm mixer is added in fine powder raw material, bonding agent and additive that step a is weighed to be pre-mixed, is obtained
Premix；
C, the premix that step b is obtained is mixed again using 500kg grades of edge mill；Mixture adds
Material sequence be：It is firstly added the particulate material that step a is weighed to stir 5~10 minutes, the premix that step b is obtained then is added
Stirring 10~15 minutes；Total mixing time is 15~20 minutes so that each ingredient of gunning refractory is uniformly mixed, and discharging after mixing carries out
Packaging.
The positive beneficial effect of the present invention：
1, using the forsterite sand of magnesite tailings synthesis, the high silicon magnesite of flotation in forsterite carbon gunning material of the present invention
Stone tailing is solid waste, since its content of magnesia is high, iron oxide and calcium oxide content are low, adds silica flour and light-burned
Magnesia powder, by low melting point Mineral Transformation for dystectic forsterite phase and with the presence of a small amount of magnesium ferrite so that synthesis
Forsterite sand high-temperature behavior is good and has good compatibility with most refractory materials.
2, silicon carbide is introduced in gunning refractory of the present invention, since there is silicon carbide itself good resistance to slag corrosion, line to expand
The advantages that coefficient is small, good thermal shock and high temperature abrasion resistance are good so that gunning refractory avoids generating in use that stress is excessive draws
The furnace lining structure risen peels off and cracking phenomena.In addition, the SiO that Oxidation of SiC produces in high-temperature heating2It can adhere to liner
Surface prevents the infiltration of slag, shields to furnace lining, prolongs the service life.
3, the additive used in gunning refractory dispensing of the present invention is by caustic-calcined magnesite, talcum powder, B2O3, silicon carbide, pelletted pitch
And LiCO3Composition.The additive has the characteristics that specific surface is big, activity is high, has acceleration of sintering effect, to enhance ceramic junction
The formation of structure；The addition of additive contributes to the agglutinating property of gunning refractory and the raising of mobility, improves its sintering process, shortens and burn
It ties the time, the improvement of mobility then makes slurry be not easy to block spray gun, convenient for construction.
4, forsterite-carbon gunning refractory of the present invention uses bonding agent for combined binder, selects sodium tripolyphosphate, six partially
At least two in sodium phosphate, silicon powder and aluminous cement.It can be in gunning refractory reaction process rapidly using combined binder
Complex structure is formed, enhances the caking property and mobility of gunning refractory, while improving the intensity in medium temperature.
5, forsterite-carbon gunning refractory of the present invention is mainly used for nonferrous smelting converter or reverberatory furnace, has good anti-
Corrode, impermeable, resistance to flaking the advantages that, and adhesive rate is high, is easy to spray repair.Effectively extend the service life of smelting furnace, and
Maintenance cost is reduced, production efficiency is improved, realizes good economic benefit.
Four, specific implementation mode：
The present invention is further explained with reference to embodiments, but is not intended to limit present disclosure.
Embodiment 1：
Non-ferrous smelting furnace of the present invention forsterite-carbon gunning refractory, is indicated with weight percentage, is by raw material granularity
The synthetic forsterite sand 60% of 0-3mm, granularity are the medium-grade magnesite 15% of 2-4mm, and granularity is<The fused magnesite of 0.088mm
10%, bonding agent 5% and additive 10% form；
The synthetic forsterite sand is prepared by following methods：
A, first by magnesite tailings, silica flour and light-burning magnesium powder be placed in ball mill distinguish it is levigate extremely<0.044mm；
B, granularity is equal after will be levigate<Mine tailing 70wt%, silica flour 15wt% and the light-burning magnesium powder 15wt% tri- of 0.044mm
Kind raw material fine powder is added in three-dimensional material mixer, is sufficiently mixed uniformly, and incorporation time is 10 minutes；
C, the step b powder mixtures being uniformly mixed are pressed into globular solids blank, the bulk density of solid blank>
2.30g/cm3；Solid blank is spontaneously dried, pellet is obtained after dry；
D, the obtained pellets of step c are placed in hyperthermia tunnel Kiln in oxidizing atmosphere and are roasted, calcination temperature is
1650 DEG C, roasting soaking time is 4h, is cooled down after roasting, obtains synthetic forsterite pellet；
E, the synthetic forsterite pellet obtained after cooling is subjected to broken classification, the synthesis magnesium olive of granularity required for obtaining
Olive stone.
It is indicated with weight percentage, the bonding agent is by raw material sodium tripolyphosphate 10%, silicon powder 35% and calcium aluminate
Cement 55% forms；
It is indicated with weight percentage, the additive is by raw material granularity<The caustic-calcined magnesite 60% of 0.088mm, granularity
For<The talcum powder 10% of 0.088mm, granularity are<The B of 0.088mm2O35%, granularity is<The silicon carbide 15% and grain of 0.088mm
The pelletted pitch 10% that degree is 0.1-0.45mm forms.
The present embodiment forsterite-carbon gunning refractory passes through performance detection, and testing result refers to table 1.
1 embodiment of table, 1 forsterite-carbon gunning refractory passes through performance test results
Embodiment 2：
Non-ferrous smelting furnace of the present invention forsterite-carbon gunning refractory, is indicated with weight percentage, is by raw material granularity
The synthetic forsterite sand 50% of 0-3mm, granularity are the medium-grade magnesite 20% of 2-4mm, and granularity is<The fused magnesite of 0.088mm
15%, bonding agent 9% and additive 6% form；
The synthetic forsterite sand is prepared by following methods：
A, first by magnesite tailings, silica flour and light-burning magnesium powder be placed in ball mill distinguish it is levigate extremely<0.044mm；
B, granularity is equal after will be levigate<Mine tailing 75wt%, silica flour 17wt% and the light-burning magnesium powder 8wt% tri- of 0.044mm
Kind raw material fine powder is added in three-dimensional material mixer, is sufficiently mixed uniformly, and incorporation time is 15 minutes；
C, the step b powder mixtures being uniformly mixed are pressed into globular solids blank, the bulk density of solid blank>
2.30g/cm3；Solid blank is spontaneously dried, pellet is obtained after dry；
D, the obtained pellets of step c are placed in hyperthermia tunnel Kiln in oxidizing atmosphere and are roasted, calcination temperature is
1700 DEG C, roasting soaking time is 3h, is cooled down after roasting, obtains synthetic forsterite pellet；
E, the synthetic forsterite pellet obtained after cooling is subjected to broken classification, the synthesis magnesium olive of granularity required for obtaining
Olive stone.
It is indicated with weight percentage, the bonding agent is by 60% group of raw material calgon 40% and aluminous cement
At；
It is indicated with weight percentage, the additive is by raw material granularity<The caustic-calcined magnesite 50% of 0.088mm, granularity
For<The talcum powder 15% of 0.088mm, granularity are<The silicon carbide 20% of 0.088mm, the pelletted pitch that granularity is 0.1-0.45mm
10% and granularity be<The lithium carbonate LiCO of 0.088mm35% composition.
The present embodiment forsterite-carbon gunning refractory passes through performance detection, and testing result refers to table 2.
2 embodiment of table, 2 forsterite-carbon gunning refractory passes through performance test results
Embodiment 3：
Non-ferrous smelting furnace of the present invention forsterite-carbon gunning refractory, is indicated with weight percentage, is by raw material granularity
The synthetic forsterite sand 40% of 0-3mm, granularity are the medium-grade magnesite 25% of 2-4mm, and granularity is<The fused magnesite of 0.088mm
20%, bonding agent 8% and additive 7% form；
The synthetic forsterite sand is prepared by following methods：
A, first by magnesite tailings, silica flour and light-burning magnesium powder be placed in ball mill distinguish it is levigate extremely<0.044mm；
B, granularity is equal after will be levigate<Mine tailing 62wt%, silica flour 25wt% and the light-burning magnesium powder 13wt% tri- of 0.044mm
Kind raw material fine powder is added in three-dimensional material mixer, is sufficiently mixed uniformly, and incorporation time is 20 minutes；
C, the step b powder mixtures being uniformly mixed are pressed into globular solids blank, the bulk density of solid blank>
2.30g/cm3；Solid blank is spontaneously dried, pellet is obtained after dry；
D, the obtained pellets of step c are placed in hyperthermia tunnel Kiln in oxidizing atmosphere and are roasted, calcination temperature is
1580 DEG C, roasting soaking time is 6h, is cooled down after roasting, obtains synthetic forsterite pellet；
E, the synthetic forsterite pellet obtained after cooling is subjected to broken classification, the synthesis magnesium olive of granularity required for obtaining
Olive stone.
It is indicated with weight percentage, the bonding agent is micro- by raw material sodium tripolyphosphate 8%, calgon 37% and silicon
Powder 55% forms；
It is indicated with weight percentage, the additive is by raw material granularity<The caustic-calcined magnesite 40% of 0.088mm, granularity
For<The talcum powder 20% of 0.088mm, granularity are<The B of 0.088mm2O310%, granularity is<25% He of silicon carbide of 0.088mm
Granularity is<The lithium carbonate LiCO of 0.088mm35% composition.
The present embodiment forsterite-carbon gunning refractory passes through performance detection, and testing result refers to table 3.
3 embodiment of table, 3 forsterite-carbon gunning refractory passes through performance test results
Embodiment 4：
Non-ferrous smelting furnace of the present invention forsterite-carbon gunning refractory, is indicated with weight percentage, is by raw material granularity
The synthetic forsterite sand 30% of 0-3mm, granularity are the medium-grade magnesite 10% of 2-4mm, and granularity is<The fused magnesite of 0.088mm
30%, bonding agent 15% and additive 15% form；
The synthetic forsterite sand is prepared by following methods：
A, first by magnesite tailings, silica flour and light-burning magnesium powder be placed in ball mill distinguish it is levigate extremely<0.044mm；
B, granularity is equal after will be levigate<Mine tailing 80wt%, silica flour 10wt% and the light-burning magnesium powder 10wt% tri- of 0.044mm
Kind raw material fine powder is added in three-dimensional material mixer, is sufficiently mixed uniformly, and incorporation time is 15 minutes；
C, the step b powder mixtures being uniformly mixed are pressed into globular solids blank, the bulk density of solid blank>
2.30g/cm3；Solid blank is spontaneously dried, pellet is obtained after dry；
D, the obtained pellets of step c are placed in hyperthermia tunnel Kiln in oxidizing atmosphere and are roasted, calcination temperature is
1750 DEG C, roasting soaking time is 3h, is cooled down after roasting, obtains synthetic forsterite pellet；
E, the synthetic forsterite pellet obtained after cooling is subjected to broken classification, the synthesis magnesium olive of granularity required for obtaining
Olive stone.
It is indicated with weight percentage, the bonding agent is by sodium tripolyphosphate 5%, calgon 16%, silicon powder
42% and aluminous cement 37% form；
It is indicated with weight percentage, the additive is by raw material granularity<The caustic-calcined magnesite 30% of 0.088mm, granularity
For<The talcum powder 8% of 0.088mm, granularity are<The B of 0.088mm2O310%, granularity is<Silicon carbide 30%, the grain of 0.088mm
It spends the pelletted pitch 15% for being 0.1-0.45mm and granularity is<The lithium carbonate LiCO of 0.088mm37% composition.
The present embodiment forsterite-carbon gunning refractory passes through performance detection, and testing result refers to table 4.
4 embodiment of table, 4 forsterite-carbon gunning refractory passes through performance test results
Embodiment 5：
Non-ferrous smelting furnace of the present invention forsterite-carbon gunning refractory, is indicated with weight percentage, is by raw material granularity
The synthetic forsterite sand 45% of 0-3mm, granularity are the medium-grade magnesite 30% of 2-4mm, and granularity is<The fused magnesite of 0.088mm
10%, bonding agent 6% and additive 9% form；
The synthetic forsterite sand is prepared by following methods：
A, first by magnesite tailings, silica flour and light-burning magnesium powder be placed in ball mill distinguish it is levigate extremely<0.044mm；
B, granularity is equal after will be levigate<Mine tailing 72wt%, silica flour 18wt% and the light-burning magnesium powder 10wt% tri- of 0.044mm
Kind raw material fine powder is added in three-dimensional material mixer, is sufficiently mixed uniformly, and incorporation time is 15 minutes；
C, the step b powder mixtures being uniformly mixed are pressed into globular solids blank, the bulk density of solid blank>
2.30g/cm3；Solid blank is spontaneously dried, pellet is obtained after dry；
D, the obtained pellets of step c are placed in hyperthermia tunnel Kiln in oxidizing atmosphere and are roasted, calcination temperature is
1600 DEG C, roasting soaking time is 4h, is cooled down after roasting, obtains synthetic forsterite pellet；
E, the synthetic forsterite pellet obtained after cooling is subjected to broken classification, the synthesis magnesium olive of granularity required for obtaining
Olive stone.
It is indicated with weight percentage, the bonding agent is by raw material calgon 25%, silicon powder 30% and calcium aluminate
Cement 45% forms；
It is indicated with weight percentage, the additive is by raw material granularity<The caustic-calcined magnesite 55% of 0.088mm, granularity
For<The talcum powder 5% of 0.088mm, granularity are<The B of 0.088mm2O310%, granularity is<Silicon carbide 10%, the grain of 0.088mm
It spends the pelletted pitch 15% for being 0.1-0.45mm and granularity is<The lithium carbonate LiCO of 0.088mm35% composition.
The present embodiment forsterite-carbon gunning refractory passes through performance detection, and testing result refers to table 5.
5 embodiment of table, 5 forsterite-carbon gunning refractory passes through performance test results
The preparation method of 1-5 of embodiment of the present invention non-ferrous smelting furnaces forsterite-carbon gunning refractory：
A, first, in accordance with the ratio of any forsterite-carbon gunning refractories of embodiment 1-5 weigh various raw materials,
Bonding agent and additive；
B, double worm mixer is added in fine powder raw material, bonding agent and additive that step a is weighed to be pre-mixed, is obtained
Premix；
C, particulate material that step a is weighed is added in 500kg grades of edge mill and is stirred 5 minutes, then
The premix that step b is obtained is added to carry out being mixed 15 minutes again；Total mixing time is 20 minutes so that gunning refractory is each
Ingredient is uniformly mixed, and is discharged and is packed after mixing.
The application method of forsterite-carbon gunning refractory of the embodiment of the present invention：
When nonferrous smelting kiln blowing out is repaired, high pressure painting is added in forsterite-carbon gunning refractory prepared by the present invention
In batch can, air source and water source are connected, air pressure is more than 0.5MPa, first carries out examination spraying, water, which is adjusted to gunning refractory, can adhere to simultaneously
It does not trickle position, amount of water 8-15wt%.When spray repair, spray gun is vertical with spray-coating surface, slowly moves nozzle, it is ensured that spraying face thickness
Uniformly, a coating thickness is not greater than 60mm, can come into operation after being sintered 10-20 minutes after spraying.
Claims (6)
1. a kind of non-ferrous smelting furnace forsterite-carbon gunning refractory, it is characterised in that：It is indicated with weight percentage, it is described
Forsterite-carbon gunning refractory is mainly by the synthetic forsterite sand 30~60% that raw material granularity is 0-3mm, granularity 2-4mm
Medium-grade magnesite 10~30%, granularity is<The fused magnesite 10~30% of 0.088mm, bonding agent 5~15% and additive 6~
20% composition；
The additive is by raw material caustic-calcined magnesite, talcum powder, boron oxide B2O3, silicon carbide, pelletted pitch and lithium carbonate LiCO3Group
At each raw material weight percentage composition proportioning is：Granularity<The caustic-calcined magnesite 30~60% of 0.088mm, granularity<The talcum of 0.088mm
Powder 5~20%, granularity<The B of 0.088mm2O31~10%, granularity<Silicon carbide 10~30%, the granularity 0.1- of 0.088mm
The pelletted pitch 5~15% and granularity of 0.45mm<The lithium carbonate LiCO of 0.088mm32~7%；
The synthetic forsterite sand is prepared by following methods：
A, first by magnesite tailings, silica flour and light-burning magnesium powder be placed in ball mill distinguish it is levigate extremely<0.044mm；
B, granularity is equal after will be levigate<62~80wt% of mine tailing, 10~25wt% of silica flour and the light-burning magnesium powder 8 of 0.044mm~
Tri- kinds of raw material fine powders of 15wt% are added in three-dimensional material mixer, are sufficiently mixed uniformly, and incorporation time is 10~20 minutes；
C, the powder mixture compacting glomeration or block-like solid blank, the volume of solid blank being uniformly mixed step b are close
Degree>2.30g/cm3；Solid blank spontaneously dry or leads to heated-air drying in drier, pellet or material are obtained after dry
Block；
D, the obtained pellets of step c or material block are placed in hyperthermia tunnel Kiln in oxidizing atmosphere and are roasted, calcination temperature is
1580~1750 DEG C, roasting soaking time is 3~6h, is cooled down after roasting, obtains synthetic forsterite pellet or material block；
E, the synthetic forsterite pellet obtained after cooling or material block are subjected to broken classification, the synthesis magnesium of granularity required for obtaining
Olivine.
2. non-ferrous smelting furnace according to claim 1 forsterite-carbon gunning refractory, which is characterized in that adopted in step c
Powder mixture is suppressed into glomeration with pressure ball equipment；Solid blank is dried using natural drying mode.
3. non-ferrous smelting furnace according to claim 1 forsterite-carbon gunning refractory, it is characterised in that：It is described to obtain
Synthetic forsterite sand in MgO mass percentages >=60%, SiO2Mass percentage >=30%, the quality of various composition
The sum of percentage composition is 100%.
4. non-ferrous smelting furnace according to claim 1 forsterite-carbon gunning refractory, it is characterised in that：The combination
Agent is two or more in sodium tripolyphosphate, calgon, silicon powder and aluminous cement.
5. non-ferrous smelting furnace according to claim 4 forsterite-carbon gunning refractory, it is characterised in that：The combination
Agent is made of sodium tripolyphosphate, calgon, silicon powder and aluminous cement, the weight percentage difference shared by each ingredient
For sodium tripolyphosphate 1~10%, calgon 15~40%, silicon powder 20~60% and aluminous cement 10~60%.
6. a kind of non-ferrous smelting furnace preparation method of forsterite-carbon gunning refractory, which is characterized in that the preparation method packet
Include following steps：
A, first, in accordance with the ratio of forsterite-carbon gunning refractory described in claim 1 weigh various raw materials, bonding agent and
Additive；
B, double worm mixer is added in fine powder raw material, bonding agent and additive that step a is weighed to be pre-mixed, is premixed
Close material；
C, the premix that step b is obtained is mixed again using 500kg grades of edge mill；Mixture charging is suitable
Sequence is：It is firstly added the particulate material that step a is weighed to stir 5~10 minutes, the premix stirring that step b is obtained then is added
10~15 minutes；Total mixing time is 15~20 minutes so that each ingredient of gunning refractory is uniformly mixed, and is discharged and is packed after mixing
.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610492625.3A CN106116608B (en) | 2016-06-23 | 2016-06-23 | A kind of non-ferrous smelting furnace forsterite-carbon gunning refractory |
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| CN107879735B (en) * | 2017-12-05 | 2021-06-25 | 河南工程学院 | Preparation method of medium-high temperature low-expansion coefficient forsterite-spodumene composite ceramic material |
| CN110451934A (en) * | 2019-08-27 | 2019-11-15 | 北京利尔高温材料股份有限公司 | A kind of Large face repair material of converter |
| CN116283220A (en) * | 2022-09-07 | 2023-06-23 | 武汉钢铁集团耐火材料有限责任公司 | Repairing mass for converter bottom and preparation method thereof |
| CN115626814B (en) * | 2022-10-21 | 2023-10-13 | 鞍山钢铁冶金炉材科技有限公司 | Converter large fabric produced by using magnesite tailing powder and preparation method thereof |
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| CN104909767A (en) * | 2015-05-12 | 2015-09-16 | 蒋碧云 | Gunning material for kiln repairing, and preparation method thereof |
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| CN104030710A (en) * | 2014-07-02 | 2014-09-10 | 武汉科技大学 | Water-based converter bedding face repairing material and using method thereof |
| CN104909767A (en) * | 2015-05-12 | 2015-09-16 | 蒋碧云 | Gunning material for kiln repairing, and preparation method thereof |
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