CN105272290B - A kind of preparation method of carbon calciner anti-erosion silica brick - Google Patents
A kind of preparation method of carbon calciner anti-erosion silica brick Download PDFInfo
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- CN105272290B CN105272290B CN201510668466.3A CN201510668466A CN105272290B CN 105272290 B CN105272290 B CN 105272290B CN 201510668466 A CN201510668466 A CN 201510668466A CN 105272290 B CN105272290 B CN 105272290B
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Abstract
A kind of preparation method the invention discloses carbon calciner with anti-erosion silica brick, using varigrained calcined silica material as primary raw material, additional sintering aid, compound additive, reinforcing agent, bonding agent, raw material is kneaded, compacting, dry, be then charged into kiln at 1380 DEG C 1440 DEG C, soaking time is sintered to finished product under the conditions of 24 30 hours, is cooled to normal temperature and can be prepared by.Product high-temperature behavior of the present invention is superior, and product consistency and yield rate improve, and corrosion resistance is strong, substantially increases the service life of carbon calciner.
Description
Technical field
The invention belongs to fire resisting material field technology, more particularly to a kind of preparation side of carbon calciner anti-erosion silica brick
Method, available for carbon calciner, there is superpower corrosion resistance.
Background technology
Carbon calciner high-quality petroleum coke raw material is increasingly reduced in recent years, the reduction of raw material grade, the impurity such as sulphur, vanadium, calcium
Composition is high, and in order to reduce production cost, Behavior of High-sulfur Petroleum Coke raw material use ratio increases, and makes the working condition of carbon calciner for manufacturer
It is harsher, the sulphur of high concentration in stove, vanadium, etc. the mineralizer generation eutectic such as impurity and the calcium in silica brick, iron, furnace lining silica brick by
Corrode extremely serious, furnace service life is reduced to current 2-3 by original 7-8.Carbon calciner silica brick is universal at present
Using the common silica brick of GZ-94, GZ-95, technical performance can not meet to use high sulfur content petroleum coke raw material calcining furnace, furnace service life
And safety is severely impacted.
The content of the invention
In order to overcome carbon calciner silica brick to serve as a contrast erosion-resisting characteristics, kiln service life is lifted, the invention provides one kind
The preparation method of carbon calciner anti-erosion silica brick.
The technical solution adopted by the present invention is：A kind of preparation method of carbon calciner anti-erosion silica brick.
Carbon calciner is with anti-erosion silica brick raw material by calcined silica material：
Granularity is 1-2.36mm 25-35%；
Granularity is 0.5-1mm 15-25%；
Granularity is 0.2-0.5mm 13-23%；
Granularity is 0.075-0.1mm 20-30%；
Granularity is 0-0.045mm 5-10%, and additional sintering aid 4-8%, compound additive 1-2%, reinforcing agent 1-2%, with reference to
Agent 2-6% is formed（By weight percentage）.
Preparation includes following process：
Step 1：Calcined silica material, reinforcing agent are added in edge runner-wet mill, mixes 2 minutes, then adds sintering aid, compound
After additive mixes 3 minutes, add bonding agent mixing and roll 15-20 minutes, being kneaded to pug homogeneous soft to go out to grind, shaping
Make base.
Step 2：The mixing pug that step 1 is obtained is pressed into sizing adobe on 630 tons of forcing presses, adobe exists
Dried at a temperature of 100-150 DEG C to residual moisture and be no more than 0.8%.
Step 3：The dry brick that step 2 is obtained loads kiln at 1380 DEG C -1440 DEG C, and soaking time 24-30 is small
When under the conditions of be sintered to finished product, be cooled to normal temperature and can be prepared by anti-erosion silica brick.
Specifically, the calcined silica material is using Henan iron gate silica block as raw material, block diameter is not more than 150mm,
Through not less than 1380 DEG C calcinings, silica block of the sintering soak not less than 10 hours is through being broken for each granularity raw material.The iron gate
SiO in silica2Content is not less than 97.5, Fe2O3Content≤0.50%, Al2O3Content≤0.5%, CaO≤0.4.The calcined silica
Expect that residual quartz is low, affter-expansion amount is small, can effectively reduce firing defects.
The sintering aid is SiO2Content is not less than 94.5% fine silica powder.Addition silicon powder is advantageous to lifting and burnt till
Activity, be advantageous to anti-erosion silica brick high temperature sintering.
The reinforcing agent is the Ludox that solid content is not less than 30%.
The compound additive is：Calcium hydroxide powder, feldspar in powder, clay powder are 3 by weight percentage:1.5:1 ratio
The homogeneous mixture of example mixing.
The bonding agent is paper pulp, proportion 1.18-1.25g/cm3, pH value 3-5.
As the preferred of such scheme, the calcium hydroxide powder Ca（OH）2 >=95%, granularity（180 mesh）≥95%；
As the preferred of such scheme, the feldspar in powder K2O：10 ~ 15%, Na2O≤5%, granularity 0.088mm >=95%；
As the preferred of such scheme, the clay powder K2O≤2%, Na2O≤0.5%, Al2O3：30% ~ 40%, granularity
0.088mm >=95%, igloss≤15%；
The composition or composition illustrated is not known in this patent, is quality composition or component.
The present invention has advantage following prominent and beneficial effect：
（1）Raw material granularity composition is optimized, proportioning is more accurate, reduces production process error.
（2）Primary raw material calcined silica material passes through high-temperature heat treatment, and raw material has partly been carried out from quartz to tridymite
Converted with cristobalite, reduce affter-expansion in sintering process, improve product consistency and yield rate.
（3）Due to the introducing of reinforcing agent and compound additive, due to the Nano-meter SiO_2 of reinforcing agent2Particle and compound additive
Stronger Ceramic bond can be formed with anti-erosion silica brick matrix in carbon calciner, improve the anti-wear performance of brick body.
（4）SiO in the sintering aid that composition of raw materials of the present invention uses2It can be filled in silica brick stomata, change brick body stomata
Form, strengthen erosion-resisting characteristics.
（5）The present invention is high using calcined silica purity, and introducing impurity is few in sintering process, and additional mineralizer is few, product
SiO2Content is high, and product high-temperature behavior is superior.
The physical and chemical index and standard GB/T 2608- of carbon calciner anti-erosion silica brick obtained by the present invention
The contrast of 2001GZ-95 types physical and chemical index see the table below：
Embodiment
Explanation is further explained to this patent with reference to embodiment.But the protection domain of this patent is not limited to specifically
Embodiment.
Embodiment 1
A kind of preparation method of carbon calciner anti-erosion silica brick, its raw material press following weights：
Calcined silica material, granularity are 1-2.36mm 28%, granularity 0.5-1mm21%, granularity 0.2-0.5mm18%, grain
Spend for 0.075-0.1mm24%, granularity 0-0.045mm9%, sintering aid 4%, compound additive 1.5%, reinforcing agent 2%, bonding agent
3.8%,
It is kneaded：Above-mentioned calcined silica material, reinforcing agent are added in edge runner-wet mill, mixed 2 minutes, then adds sintering aid, multiple
After closing additive mixing 3 minutes, add bonding agent mixing and rolls 15 minutes, being kneaded to pug homogeneous soft to go out to grind；
Shaping：Pug after mixing is weighed by fixed weight and poured into mold in 630 tons of forming under the pressure；
Dry：Adobe is dried to residual moisture 0.6% at a temperature of 100 DEG C,
Burn till：Gained adobe is loaded into kiln at 1400 DEG C, 25 hours is incubated, is sintered to finished product, is cooled to normal temperature i.e.
It can be made.
Embodiment 2
A kind of preparation method of carbon calciner anti-erosion silica brick, its raw material press following weights：
Calcined silica material, granularity are 1-2.36mm 35%, granularity 0.5-1mm15%, granularity 0.2-0.5mm13%, grain
Spend for 0.075-0.1mm30%, granularity 0-0.045mm7%, sintering aid 4%, compound additive 2.0%, reinforcing agent 1.0%, with reference to
Agent 4%,
It is kneaded：Above-mentioned calcined silica material, reinforcing agent are added in edge runner-wet mill, mixed 2 minutes, then adds sintering aid, multiple
After closing additive mixing 3 minutes, add bonding agent mixing and rolls 20 minutes, being kneaded to pug homogeneous soft to go out to grind；
Shaping：Pug after mixing is weighed by fixed weight and poured into mold in 630 tons of forming under the pressure；
Dry：Adobe is dried to residual moisture 0.7% at a temperature of 150 DEG C,
Burn till：Gained adobe is loaded into kiln at 1380 DEG C, 30 hours is incubated, is sintered to finished product, is cooled to normal temperature i.e.
It can be made.
Embodiment 3
A kind of preparation method of carbon calciner anti-erosion silica brick, its raw material press following weights：
Calcined silica material, granularity are 1-2.36mm 25%, granularity 0.5-1mm25%, granularity 0.2-0.5mm23%, grain
Spend for 0.075-0.1mm20%, granularity 0-0.045mm7%, sintering aid 8%, compound additive 1.0%, reinforcing agent 1.2%, with reference to
Agent 6.0%,
It is kneaded：Above-mentioned calcined silica material, reinforcing agent are added in edge runner-wet mill, mixed 2 minutes, then adds sintering aid, multiple
After closing additive mixing 3 minutes, add bonding agent mixing and rolls 18 minutes, being kneaded to pug homogeneous soft to go out to grind；
Shaping：Pug after mixing is weighed by fixed weight and poured into mold in 630 tons of forming under the pressure；
Dry：Adobe is dried to residual moisture 0.8% at a temperature of 120 DEG C,
Burn till：Gained adobe is loaded into kiln at 1420 DEG C, 28 hours is incubated, is sintered to finished product, is cooled to normal temperature i.e.
It can be made.
Embodiment 4
A kind of preparation method of carbon calciner anti-erosion silica brick, its raw material press following weights：
Calcined silica material, granularity are 1-2.36mm 32%, granularity 0.5-1mm18%, granularity 0.2-0.5mm15%, grain
Spend for 0.075-0.1mm25%, granularity 0-0.045mm10%, sintering aid 4%, compound additive 1.9%, reinforcing agent 1.5%, with reference to
Agent 4.5%,
It is kneaded：Above-mentioned calcined silica material, reinforcing agent are added in edge runner-wet mill, mixed 2 minutes, then adds sintering aid, multiple
After closing additive mixing 3 minutes, add bonding agent mixing and rolls 20 minutes, being kneaded to pug homogeneous soft to go out to grind；
Shaping：Pug after mixing is weighed by fixed weight and poured into mold in 630 tons of forming under the pressure；
Dry：Adobe is dried to residual moisture 0.6% at a temperature of 100 DEG C,
Burn till：Gained adobe is loaded into kiln at 1440 DEG C, 30 hours is incubated, is sintered to finished product, is cooled to normal temperature i.e.
It can be made.
Claims (1)
- A kind of 1. carbon calciner preparation method of anti-erosion silica brick, it is characterised in that carbon calciner anti-erosion silica brick Raw material is by calcined silica material：Granularity is 1-2.36mm 25-35%；Granularity is 0.5-1mm 15-25%；Granularity is 0.2-0.5mm 13-23%；Granularity is 0.075-0.1mm 20-30%；Granularity is 0-0.045mm 5-10%,Additional sintering aid 4-8%, compound additive 1-2%, reinforcing agent 1-2%, bonding agent 2-6% composition, raw material proportioning by weight hundred Divide than meter；The calcined silica material refers to Henan iron gate silica block, and the block diameter is not more than 150mm, through being forged not less than 1380 DEG C Burn, silica block of the sintering soak not less than 10 hours is through being broken for each granularity raw material, SiO in above-mentioned iron gate silica2Content is not Less than 97.5%, the Fe in silica2O3≤ 0.50%, Al2O3≤ 0.5%, CaO≤0.4%；The sintering aid is SiO2Content is not less than 94.5% fine silica powder, the reinforcing agent are the Ludox that solid content is not less than 30%；The bonding agent is paper pulp, proportion For 1.18-1.25g/cm3, pH value 3-5；The compound additive is：Calcium hydroxide powder, feldspar in powder, clay powder are by weight Than for 3:1.5:The homogeneous mixture of 1 ratio mixing, Ca (OH) in the calcium hydroxide powder2>=95%, the mesh of granularity 180 >= 95%；K in the feldspar in powder2O：10 ~ 15%, Na2O≤5%, granularity 0.088mm >=95%；K in the clay powder2O≤2%, Na2O≤0.5%, Al2O3：30% ~ 40%, granularity 0.088mm >=95%, igloss≤15%, preparing includes following process：Step 1：Calcined silica material, reinforcing agent are added in edge runner-wet mill, mixes 2 minutes, then adds sintering aid, compound additional After agent mixes 3 minutes, add bonding agent mixing and roll 15-20 minutes, being kneaded to pug homogeneous soft to go out to grind, and shaping is made Base；Step 2：The mixing pug that step 1 is obtained is pressed into sizing adobe on 630 tons of forcing presses, adobe is in 100- Dried at a temperature of 150 DEG C to residual moisture and be no more than 0.8%；Step 3：The dry brick that step 2 is obtained loads kiln at 1380 DEG C -1440 DEG C, soaking time 24-30 hour bars Finished product is sintered under part, normal temperature is cooled to and can be prepared by anti-erosion silica brick.
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| CN110272287A (en) * | 2018-03-16 | 2019-09-24 | 焦作诺尔曼炉业有限公司 | A kind of can-type calcine furnace furnace lining anti-erosion refractory material preparation method |
| CN112341171A (en) * | 2020-11-25 | 2021-02-09 | 辽宁科技大学 | Preparation method of silicon sintering crucible for induction furnace lining |
| CN115894055A (en) * | 2022-12-22 | 2023-04-04 | 郑州通达耐材有限责任公司 | High wear-resistant coke oven silica brick and manufacturing process thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515801A (en) * | 2011-12-20 | 2012-06-27 | 浙江照山硅质耐火材料有限公司 | Silica brick for glass furnace |
| CN102557684A (en) * | 2011-12-26 | 2012-07-11 | 山西盂县西小坪耐火材料有限公司 | Silica brick for coke oven |
| CN104591749A (en) * | 2014-11-12 | 2015-05-06 | 中钢集团耐火材料有限公司 | Superhigh-thermal conductivity silica brick for coke oven charing chamber furnace wall and preparation method thereof |
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2015
- 2015-10-13 CN CN201510668466.3A patent/CN105272290B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515801A (en) * | 2011-12-20 | 2012-06-27 | 浙江照山硅质耐火材料有限公司 | Silica brick for glass furnace |
| CN102557684A (en) * | 2011-12-26 | 2012-07-11 | 山西盂县西小坪耐火材料有限公司 | Silica brick for coke oven |
| CN104591749A (en) * | 2014-11-12 | 2015-05-06 | 中钢集团耐火材料有限公司 | Superhigh-thermal conductivity silica brick for coke oven charing chamber furnace wall and preparation method thereof |
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Address after: 471039, Xiyuan Road, Jianxi District, Henan, Luoyang Patentee after: Sinosteel luonai New Material Technology Co., Ltd Address before: 471039, Xiyuan Road, Jianxi District, Henan, Luoyang Patentee before: SiNOSTEEL Refractory Co., Ltd. |
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