CN102503498A - Method for treating used waste carbon-containing refractory bricks - Google Patents
Method for treating used waste carbon-containing refractory bricks Download PDFInfo
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- CN102503498A CN102503498A CN2011103654687A CN201110365468A CN102503498A CN 102503498 A CN102503498 A CN 102503498A CN 2011103654687 A CN2011103654687 A CN 2011103654687A CN 201110365468 A CN201110365468 A CN 201110365468A CN 102503498 A CN102503498 A CN 102503498A
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Abstract
The invention relates to a method for treating used waste carbon-containing refractory bricks. The method is characterized by comprising the following steps of: (1) crushing used carbon-containing refractory bricks from which deteriorative layers and steel slag are removed into waste brick particles which are 3-6 millimeters in particle sizes in maximum; (2) putting the waste brick particles into a wheel mill for milling for 20-90 minutes, and removing iron from the milled waste brick particles with a magnetic separator; (3) sieving the milled and magnetically-separated waste brick particles to obtain waste brick particles of which the particle sizes are greater than 1 millimeter and smaller than 1 millimeter; and (4) putting the waste brick particles of which the particle sizes are smaller than 1 millimeter into a pneumatic separator for performing pneumatic separation to obtain a light component of which the average specific weight is smaller than or equal to 2 and a heavy component of which the average specific weight is more than or equal to 2.8, wherein the air speed of the pneumatic separator is 5-20 m/s. In the method, waste brick particles of smaller than 1 millimeter are treated, and different components are separated out according to specific weights; and the separated components have higher purity and more stable chemical components, so that subsequent manufacturing of new refractory bricks is convenient.
Description
Technical field
The present invention relates to a kind of treatment process with back refractory brick, especially a kind of treatment process of discarding carbon containing refractory brick with the back of making steel belongs to the refractory materials preparing technical field.
Background technology
Along with the fast development of Iron And Steel Industry, the consumption of refractory materials is also increasing.Wherein steel-making is the maximum refractory materials of consumption with carbon containing refractory brick.At present, the steel-making after China uses every year has the hundreds of thousands of ton with carbon containing refractory brick.Wherein a part does not obtain recycling, or the carbonaceous waste brick that reclaims is not fully used.
The recycling of using back carbon containing refractory brick is for economizing on resources, reduce energy consumption, preventing that land seizure has realistic meaning.Along with the development of lithium cell, graphite resource is day by day expensive in recent years.Make good use of the cost that graphite resource can effectively reduce refractory brick fully
The usual practice of handling carbonaceous waste refractory brick is:
(1) earlier the impurity in different types of discarded carbon containing refractory brick is chosen, divided to analogize and put; Steel-making is followed successively by former brick layer, metamorphic layer from the inside to surface with the workplace of waste refractory bricks; Layer outside also is stained with one deck slag on the turn, and the metamorphic layer here is meant refractory materials in use, because the chemical action of high temperature action and etching medium; The novel substance layer that its workplace forms is claimed responding layer again.Can remove through hammer and cutting machine for metamorphic layer, slag;
(2) broken the discarded carbon containing refractory brick behind the sorting; Be processed into the useless brick particle of various granularities; Putting into wheel roller to the useless brick particle after the fragmentation rolls; Play the effect that destroys false particle and homogenizing, finally obtain, join these particles in the middle of the new refractory brick then greater than 1mm with less than the particle of 1mm.Multinomial research shows that adding is less for new refractory brick Effect on Performance greater than the particle of 1mm, but adds the quality that can have a strong impact on new refractory brick less than the useless brick of the small-particle of 1mm.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the prior art, a kind of treatment process with the discarded carbon containing refractory brick in back is provided, improve the new anti-Products Quality stability of utilizing the useless brick of small-particle.
According to technical scheme provided by the invention, said treatment process with the discarded carbon containing refractory brick in back, characteristic is may further comprise the steps:
(1) will remove the use of metamorphic layer and slag after carbon containing refractory brick be broken into the useless brick particle that maximum particle diameter is 3 ~ 6mm, the carbon content in the said discarded carbon containing refractory brick is 1 ~ 30%; Unit is a weight percentage;
(2) the brick particle that will give up is put into wheel roller and is rolled, and the time of rolling is 20 ~ 90min; Useless brick particle after rolling is carried out deironing through magnetic separator;
The useless brick particle that (3) will roll, obtain after the magnetic separation sieves and obtains particle diameter greater than 1mm with less than the useless brick particle of 1mm;
(4) particle diameter is put into winnowing machine less than the useless brick particle of 1mm and carry out the selection by winnowing separation, the wind speed of winnowing machine is 5 ~ 20m/s, and selection by winnowing obtains the light component of ASG≤2 and the heavy component of ASG>=2.8.
Beneficial effect of the present invention: compare prior art, for handling, isolated different components among the present invention according to proportion less than the useless brick of the small-particle of 1mm; Component purity after the separation is higher, chemical ingredients is more stable, is convenient to the follow-up manufacturing that is used for new refractory brick; The present invention is improved the quality stability of the new refractory brick that has utilized the useless brick of small-particle.
Embodiment
Below in conjunction with specific embodiment the present invention is described further.
Embodiment one: a kind of treatment process with the discarded fire-resistant firebrick of carbon containing in back may further comprise the steps:
(1) will remove the using of metamorphic layer and slag after magnesia carbon brick be broken into the useless brick particle of maximum particle diameter as 5mm, the carbon content after the said use in the magnesia carbon brick is 14%, content of magnesia is 78%; Unit is a weight percentage, down together;
(2) the brick particle that will give up is put into wheel roller and is rolled, and the time of rolling is 60min; Useless brick particle after rolling is passed through the magnetic separator deironing;
The useless brick particle that (3) will roll, obtain after the magnetic separation sieves and obtains particle diameter is 3 ~ 5mm, 1 ~ 3mm and less than the useless brick particle of 1mm; Through detecting, the carbon content in the useless brick particle of 3 ~ 5mm and 1 ~ 3mm is 30% less than 3% less than the carbon content in the useless brick particle of 1mm;
(4) particle diameter is put into winnowing machine less than the useless brick particle of 1mm and carry out the selection by winnowing separation, the wind speed of winnowing machine is 5m/s, and selection by winnowing obtains the light component of ASG≤2.4 and the heavy component of ASG>=2.8; Carbon content in the said light component is 65%, and content of magnesia is 20%; Carbon content in the said heavy component is 16%, and content of magnesia is 75%; The major ingredient of said light component is a carbon element, and the major ingredient of said heavy component is a refractory aggregate.
Embodiment two: a kind of treatment process with the discarded carbon containing refractory brick in back may further comprise the steps:
(1) will remove the using of metamorphic layer and slag after Al2O3MgOC Bricks be broken into the useless brick particle of maximum particle diameter as 3mm, the carbon content after the said use in the Al2O3MgOC Bricks is 11%, content of magnesia is 15%, alumina content is 58%, dioxide-containing silica is 6%;
(2) the brick particle that will give up is put into wheel roller and is rolled, and the time of rolling is 20min; Useless brick particle after rolling is passed through the magnetic separator deironing;
The useless brick particle that (3) will roll, obtain after the magnetic separation sieves and obtains particle diameter is 1 ~ 3mm and less than the useless brick particle of 1mm; Through detecting, the carbon content in the useless brick particulate material of 1 ~ 3mm is 28% less than 3% less than the carbon content in the useless brick particle of 1mm, and content of magnesia is 20%, and alumina content is 38%, and dioxide-containing silica is 9%;
(4) particle diameter is put into winnowing machine less than the useless brick particle of 1mm and carry out the selection by winnowing separation, the wind speed of winnowing machine is 5 ~ 20m/s, and selection by winnowing obtains the light component of ASG≤2.4 and the heavy component of ASG>=2.8; Carbon content in the said light component is 63%, and content of magnesia is 25%; Carbon content in the said heavy component is 20%, and content of magnesia is 75%; The major ingredient of said light component is a carbon element, and the major ingredient of said heavy component is a refractory aggregate.
Embodiment three: a kind of treatment process with the discarded carbon containing refractory brick in back may further comprise the steps:
(1) will remove the using of metamorphic layer and slag after magnesia carbon brick be broken into the useless brick particle of maximum particle diameter as 6mm, the carbon content after the said use in the magnesia carbon brick is 30%;
(2) the brick particle that will give up is put into wheel roller and is rolled, and the time of rolling is 90min; Useless brick particle after rolling is passed through the magnetic separator deironing;
The useless brick particle that (3) will roll, obtain after the magnetic separation sieves and obtains particle diameter is 3 ~ 5mm, 1 ~ 3mm and less than the useless brick particle of 1mm;
(4) particle diameter is put into winnowing machine less than the useless brick particle of 1mm and carry out the selection by winnowing separation, the wind speed of winnowing machine is 20m/s, and selection by winnowing obtains the light component of ASG≤2.4 and the heavy component of ASG>=2.8; Carbon content in the said light component is 70%, and content of magnesia is 26%; Carbon content in the said heavy component is 25%, and content of magnesia is 70%.The major ingredient of said light component is a carbon element, and the major ingredient of said heavy component is a refractory aggregate.
Claims (1)
1. the treatment process with the discarded carbon containing refractory brick in back is characterized in that, may further comprise the steps:
(1) will remove the use of metamorphic layer and slag after carbon containing refractory brick be broken into the useless brick particle that maximum particle diameter is 3 ~ 6mm, the carbon content in the said discarded carbon containing refractory brick is 1 ~ 30%; Unit is a weight percentage;
(2) the brick particle that will give up is put into wheel roller and is rolled, and the time of rolling is 20 ~ 90min; Useless brick particle after rolling is carried out deironing through magnetic separator;
The useless brick particle that (3) will roll, obtain after the magnetic separation sieves and obtains particle diameter greater than 1mm with less than the useless brick particle of 1mm;
(4) particle diameter is put into winnowing machine less than the useless brick particle of 1mm and carry out the selection by winnowing separation, the wind speed of winnowing machine is 5 ~ 20m/s, and selection by winnowing obtains the light component of ASG≤2 and the heavy component of ASG>=2.8.
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| CN2011103654687A CN102503498A (en) | 2011-11-17 | 2011-11-17 | Method for treating used waste carbon-containing refractory bricks |
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| CN2011103654687A CN102503498A (en) | 2011-11-17 | 2011-11-17 | Method for treating used waste carbon-containing refractory bricks |
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| CN102503498A true CN102503498A (en) | 2012-06-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103537475A (en) * | 2012-07-13 | 2014-01-29 | 蒋明学 | Comprehensive utilization method of used alkaline refractory materials |
| CN112121969A (en) * | 2020-08-24 | 2020-12-25 | 柯超 | Method for preparing fire brick grains by utilizing waste runner bricks |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201357163Y (en) * | 2009-02-12 | 2009-12-09 | 云南华威废弃物资源化有限公司 | Domestic garbage and construction waste mixture sorting device |
| CN101962300A (en) * | 2010-08-25 | 2011-02-02 | 湖南湘钢宜兴耐火材料有限公司 | Regeneration method of steelmaking carbonic crushed brick |
| CN102010159A (en) * | 2010-10-29 | 2011-04-13 | 无锡市宜宏耐火材料有限公司 | Energy-saving type air permeable brick and preparation method thereof |
| CN102211889A (en) * | 2011-04-19 | 2011-10-12 | 上海德滨环保科技有限公司 | Method for resource recovery of construction wastes |
-
2011
- 2011-11-17 CN CN2011103654687A patent/CN102503498A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201357163Y (en) * | 2009-02-12 | 2009-12-09 | 云南华威废弃物资源化有限公司 | Domestic garbage and construction waste mixture sorting device |
| CN101962300A (en) * | 2010-08-25 | 2011-02-02 | 湖南湘钢宜兴耐火材料有限公司 | Regeneration method of steelmaking carbonic crushed brick |
| CN102010159A (en) * | 2010-10-29 | 2011-04-13 | 无锡市宜宏耐火材料有限公司 | Energy-saving type air permeable brick and preparation method thereof |
| CN102211889A (en) * | 2011-04-19 | 2011-10-12 | 上海德滨环保科技有限公司 | Method for resource recovery of construction wastes |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103537475A (en) * | 2012-07-13 | 2014-01-29 | 蒋明学 | Comprehensive utilization method of used alkaline refractory materials |
| CN103537475B (en) * | 2012-07-13 | 2017-09-26 | 蒋明学 | With the method for comprehensive utilization of rear basic refractory |
| CN112121969A (en) * | 2020-08-24 | 2020-12-25 | 柯超 | Method for preparing fire brick grains by utilizing waste runner bricks |
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Application publication date: 20120620 |