CN1036746A - Produce the novel process of white carbon black with silica sand - Google Patents

Produce the novel process of white carbon black with silica sand Download PDF

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Publication number
CN1036746A
CN1036746A CN 89105875 CN89105875A CN1036746A CN 1036746 A CN1036746 A CN 1036746A CN 89105875 CN89105875 CN 89105875 CN 89105875 A CN89105875 A CN 89105875A CN 1036746 A CN1036746 A CN 1036746A
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China
Prior art keywords
carbon black
white carbon
silica sand
novel process
ageing
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Application number
CN 89105875
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Chinese (zh)
Other versions
CN1016154B (en
Inventor
杜泽林
袁源
陈荣国
古朝彬
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CHONGQING CITY CHEMICAL ENGINEERING INST
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CHONGQING CITY CHEMICAL ENGINEERING INST
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Application filed by CHONGQING CITY CHEMICAL ENGINEERING INST filed Critical CHONGQING CITY CHEMICAL ENGINEERING INST
Priority to CN 89105875 priority Critical patent/CN1016154B/en
Publication of CN1036746A publication Critical patent/CN1036746A/en
Publication of CN1016154B publication Critical patent/CN1016154B/en
Expired legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
    • C01B33/186—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof from or via fluosilicic acid or salts thereof by a wet process
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Silicon Compounds (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)

Abstract

The present invention is a kind of novel process of producing white carbon black with silica sand, comprise reaction, in and ageing, filtration washing, drying and crushing and NH 4F and NH 3Reclaim the circulation plurality of units.The present invention removes the firstling production that feeds intake first need add a certain amount of NH 4F and NH 3Outward, continue after batch process in only need outside system, to replenish the NH of minute quantity 4F and NH 3Technology raw materials consumption of the present invention and less energy consumption, low in the pollution of the environment, cost is low, good product quality.After realizing industrialization, it might partly or entirely replace traditional white carbon black production technology.

Description

Produce the novel process of white carbon black with silica sand
The invention belongs to the oxide compound of silicon, specifically produce the novel process of white carbon black with silica sand.
White carbon black has another name called light silicon dioxide, is the good strengthening agent of rubber, and its reinforcing property is only second to carbon black; Also as lubricant, insulating material, and the stopping composition or the white pigment of plastics, paper, paint, textiles.The traditional method that with the silica sand is the raw material production white carbon black is that silica sand, soda ash are placed reverberatory furnace high-temperature fusion system water glass, make rare sodium silicate solution with water dissolution then, carry out maturation process with mineral acid again, after washing filtering, drying and crushing and the white carbon black product.This traditional technology not only expends a large amount of industrial chemicals, and the energy consumption height, the production cost height.
The objective of the invention is to create a kind of is raw material with the silica sand, few other industrial chemicals that consume in the production process, and the novel process of the obvious production white carbon black that reduces of the above-mentioned traditional technology of energy loss-rate.
The present invention is achieved in that
Will be through deironing deliming pre-treatment, SiO 2Content is not less than 98%(weight, and is as follows) silica sand and solid NH 2F(100%) press NH 4F and SiO 2Weight ratio 1: the 0.30-0.48 thorough mixing adds in the reactor, reacts at least 40 minutes in 100-200 ℃ of temperature range, generates (NH 4) 2SiF 6Solid, NH simultaneously overflows 3And water vapor; In reactor, restrain (NH then with 170-190 4) 2SiF 6The NH that adds 25-35% 41 liter of heating of F solution makes (NH 4) 2SiF 6Solid dissolves fully, filtered while hot.Reaction equation in reaction workshop section is as follows:
Filter residue (unreacted silica sand) is stayed in the reactor, with ageing workshop section, added the ammoniacal liquor of 25-28% rapidly under 60-80 ℃ of agitation condition during gained filtrate is introduced, the volumetric ratio of filtrate and ammoniacal liquor is 1: 0.35-0.45; Naturally cool to normal temperature then, ageing is 3 hours at least.In and the reaction equation of ageing workshop section as follows:
Subsequent filtration, filtrate (NH 4F solution) be collected in a NH 4In the F solution storage trough, filter Pie successively uses the NH of 30-3% different concns again 4The F solution washing is washed till NH among the filter Pie 4F content is not more than 5%, and each washings is collected in the NH of respective concentration respectively 4In the F solution storage trough, produce (NH in the solubilizing reaction still for following batch 4) 2SiF 6Select for use when solid and washing filter Pie; Further wash filter Pie with clear water then and contain F to wash water -Below 0.005%, can think that filter Pie washing is qualified; Contain F -Recycle in that the wash water more than 0.03% is recyclable.Washing qualified filter Pie is the wet product of white carbon black, send drying and crushing workshop section to be dried to water content 5-7% at 120-150 ℃, and final powder is broken to and promptly gets the white carbon black product below 200 orders.With a NH 4Solution in the F solution storage trough (concentration is more than 35%) is sent into thickener, is concentrated into 20-22Be °, crystallisation by cooling, Separation and Recovery solid NH 4F returns reactor and does following batch of production cycle use.NH 4The NH that F thickener and reactor are overflowed 3All send the ammonia recovery tower to make ammoniacal liquor (NH 3〉=30%), offer in and ageing workshop section recycle.
Accompanying drawing is produced the block diagram of white carbon black novel process with silica sand for the present invention.
The white carbon that makes by technique of the present invention is the transparent white carbon of high reinforcement, and the quality index that reaches is as follows:
SiO 2% ≥94
Moisture content %≤8
Burning decrement %≤7
Specific surface area (volumetry) m/g 〉=300
PH value 7.0-7.5
Look specific volume (centrifuging) g/ml≤0.22
Refractive index 4.5-5.6
More than every index all meet or exceed white carbon black quality index with produced in conventional processes.The present invention is owing to reclaimed the NH in the production process 3NH 4F and NH 3And recycle in system, therefore, remove the firstling production that feeds intake first and need add a certain amount of NH 4F and NH 3Outside the industrial chemicals, continue after batch process in only need outside system, to replenish the NH of minute quantity 4F and NH 3Technology of the present invention is compared with the traditional method that with silica sand and soda ash is the raw material production white carbon black, to produce 1000 tons of white carbon blacks per year, adopts the technology of the present invention 500-1000 unit/ton that can reduce production costs.The present invention have raw material consumption and less energy consumption, low in the pollution of the environment, cost is low, the characteristics of good product quality.Can expect that after novel process of the present invention realized industrialization, it might partly or entirely replace traditional white carbon black production technology, makes white carbon black production enter a new stage.

Claims (5)

1, a kind of novel process of producing white carbon black with silica sand, comprise reaction, in and ageing, filtration washing, drying and crushing and NH 4F and NH 3Reclaim the circulation plurality of units.It is characterized in that reaction is with silica sand and solid NH 4F presses NH 4F and SiO 2Weight ratio 1: the 0.30-0.48 thorough mixing adds in the reactor, reacts at least 40 minutes in 100-200 ℃ of temperature range.
2, according to the described novel process of producing white carbon black of claim 1, it is characterized in that (the NH that above-mentioned reaction generates with silica sand 4) 2SiF 6Solid is with 170-190 gram (NH in reactor 4) 2SiF 6The NH that adds 25-35% 41 liter of heating for dissolving of F solution and filtered while hot are in the introducing and ageing workshop section.
3, according to claim 1 and 2 described novel procesies of producing white carbon black, it is characterized in that said filtration washing is at a NH with filtrate collection with silica sand 4In the F solution storage trough, filter Pie successively uses the NH of 30-3% different concns again 4The F solution washing is washed till NH among the filter Pie 4F content is not more than 5%, and each washings is collected in the NH of respective concentration respectively 4In the F solution storage trough; Further with clear water washing filter Pie, to wash water, contain F then -Qualified below 0.005% for filter Pie washing.
4, according to the described novel process of producing white carbon black of claim 1, said NH with silica sand 4F and NH 3Reclaiming circulation is with a NH 4Solution in the F solution storage trough is through condensing crystal, Separation and Recovery solid NH 4F returns reactor and does following batch of production cycle use; With NH 4The solution of the respective concentration of collecting in the F solution storage trough offers down (NH in batch production solubilizing reaction still 4) 2SiF 6Select for use when solid and washing filter Pie, with reactor and NH 4The NH that the F thickener is overflowed 3Reclaim system ammoniacal liquor, recycle with ageing workshop section in offering.
5, according to the described novel process of producing white carbon black of claim 1 with silica sand, it is characterized in that said in and ageing be the ammoniacal liquor that under 60-80 ℃ of agitation condition, adds 25-28% rapidly, the volumetric ratio of filtrate and ammoniacal liquor is 1: 0.35-0.45; Naturally cool to normal temperature then, ageing is 3 hours at least.
CN 89105875 1989-03-13 1989-03-13 Process of producing white carbon using siliceous sand Expired CN1016154B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 89105875 CN1016154B (en) 1989-03-13 1989-03-13 Process of producing white carbon using siliceous sand

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 89105875 CN1016154B (en) 1989-03-13 1989-03-13 Process of producing white carbon using siliceous sand

Publications (2)

Publication Number Publication Date
CN1036746A true CN1036746A (en) 1989-11-01
CN1016154B CN1016154B (en) 1992-04-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 89105875 Expired CN1016154B (en) 1989-03-13 1989-03-13 Process of producing white carbon using siliceous sand

Country Status (1)

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CN (1) CN1016154B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006131066A1 (en) * 2005-06-08 2006-12-14 Degussa Wellink Silica (Nanping) Co. Ltd. A process for producing silica and sodium sulfite with sodium sulfate
CN102701219A (en) * 2012-07-11 2012-10-03 郭雨 High-pressure microwave digested quartz sand and method for preparing nano-amorphous silicon oxide
CN108996510A (en) * 2018-06-25 2018-12-14 确成硅化学股份有限公司 The preparation method of dustless easy dispersed silicon dioxide

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006131066A1 (en) * 2005-06-08 2006-12-14 Degussa Wellink Silica (Nanping) Co. Ltd. A process for producing silica and sodium sulfite with sodium sulfate
CN102701219A (en) * 2012-07-11 2012-10-03 郭雨 High-pressure microwave digested quartz sand and method for preparing nano-amorphous silicon oxide
CN108996510A (en) * 2018-06-25 2018-12-14 确成硅化学股份有限公司 The preparation method of dustless easy dispersed silicon dioxide

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Publication number Publication date
CN1016154B (en) 1992-04-08

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