CN104961482A - Refractory material recycling technological process - Google Patents
Refractory material recycling technological process Download PDFInfo
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- CN104961482A CN104961482A CN201510351026.5A CN201510351026A CN104961482A CN 104961482 A CN104961482 A CN 104961482A CN 201510351026 A CN201510351026 A CN 201510351026A CN 104961482 A CN104961482 A CN 104961482A
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Abstract
The invention discloses a refractory material recycling method. The method includes the following steps of removing impurities attached to surfaces of recycled clay bricks through a mechanical grinding method, smashing the recycled clay bricks through a jaw crusher and a roll crusher, sorting out impurities, conducting deironing through magnetic separation to obtain particle materials, and preparing and mixing waste burnt clay brick particle materials, petrol coke powder, cement CA-50, alumina powder, fine silica powder and barite. Through the method, high-quality high-aluminum castable can be recycled.
Description
Technical field
The present invention relates to the treatment technology of comprehensive utilization of resources industrial solid wastes, the product obtained is high grade refractory.
Background technology
The Year's consumption of China's refractory materials at 9,000,000 more than t, with rear waste refractory materials about 4,000,000 more than t.If these used refractory, through selection, classification and special art breading, just can obtain the very high refractory raw material of value.Adopt the reworked material after these refractory raw material processing treatment, not only can the unshape refractory of production high-quality, and can also regenerate the shaped product of high-quality, some can as metallurgic auxiliary materials, as slag splashing furnace protecting material, slag former etc., simultaneously also can building, cement and agriculture in be applied.This has not only saved national mineral wealth and the energy, and decreases environmental pollution, greatly reduces the production cost of refractory materials, produces considerable economic benefit and social benefit.Therefore, be significantly to carrying out recycling research with rear waste refractory materials.
Large quantity research is carried out to the recycling of waste refractory materials both at home and abroad, have developed wear-resisting pottery and grinding medium, ironmaking torpedo car liner tile, stemming and iron runner material, steel-making regeneration slide brick, regenerative magnesia-carbon brick, secondary aluminum magnesia carbon brick, magnesia carbon brick, magnesia chrome brick, and the steel-making very value product such as mould material, ramming mass, Gunning refractory, repair material, slag splashing furnace protecting material, tap hole filler, stuffing sand, slag former, and the performance of these products close to or reach original product, some even to exceed original product.
The present invention aims to provide a kind of new refractory materials recycling technical process, and it is simple to operate, can obtain the product be of high quality.
Summary of the invention
Based on the technical problem that background technology exists, the invention provides a kind of new refractory materials recycling technical process, it is simple to operate, can obtain the product be of high quality.
Especially, useless after steel mill produces have many discarded clay bricks, utilizes these clay bricks can be salvaged, and produces high withstand voltage high alumina castable.High alumina material feeding is the one of Low Cement Castable, with common refractory castable unlike, in matrix, most aluminous cement is replaced by (Ai Ken) super-fine powder, coordinates simultaneously and adds appropriate additive, meet and exceed a kind of product of the performance of Portland cement mould material.
Technical scheme of the present invention is as follows:
A method for refractory materials recycling, its step is as follows:
(1) pre-treatment of discarded clay brick:
The method of mechanical grinding is adopted to remove the impurity of its surface attachment the clay brick of recovery; Then adopt jaw crusher, oppositely rolling roller crusher by broken for the clay brick reclaimed, sort out impurity, carries out iron removal by magnetic separation, obtains particulate material;
(2) prepare burden according to following parts by weight:
To give up chainotte brick particulate material, petroleum coke powder, CA-50 cement, calcined bauxite in powder, fine silica powder part, barite part, carries out batching mixing.
As preferably, step (1) is: the particulate material obtaining 3mm-5mm.
As preferably, step (2) is: chainotte brick particulate material 79-85 part of giving up, petroleum coke powder 3-5 part, CA-50 cement 10 parts, calcined bauxite in powder 5-12 part, fine silica powder 2-5 part, barite part 1-2 part, carries out batching mixing.
Usefulness of the present invention is:
1, steel mill is useless after producing many discarded clay bricks, and utilize these clay bricks can be salvaged, produce high withstand voltage high alumina castable, utilization of waste material cost is low.
2, clay brick recycling will be discarded, energy-conserving and environment-protective.
3, the present invention is by improving technique, and rational proportion, obtains the high alumina castable of high-quality.
Embodiment
embodiment 1:
A method for refractory materials recycling, its step is as follows:
(1) pre-treatment of discarded clay brick:
The method of mechanical grinding is adopted to remove the impurity of its surface attachment the clay brick of recovery; Then adopt jaw crusher, oppositely rolling roller crusher by broken for the clay brick reclaimed, sort out impurity, carries out iron removal by magnetic separation, obtains the particulate material of 3mm-5mm;
(2) prepare burden according to following parts by weight:
To give up chainotte brick particulate material 80 parts, petroleum coke powder 5 parts, CA-50 cement 10 parts, calcined bauxite in powder 12 parts, fine silica powder 2 parts, barite part 1 part, carries out batching mixing.
Obtain high alumina castable.
embodiment 2:
A method for refractory materials recycling, its step is as follows:
(1) pre-treatment of discarded clay brick:
The method of mechanical grinding is adopted to remove the impurity of its surface attachment the clay brick of recovery; Then adopt jaw crusher, oppositely rolling roller crusher by broken for the clay brick reclaimed, sort out impurity, carries out iron removal by magnetic separation, obtains the particulate material of 3mm-5mm;
(2) prepare burden according to following parts by weight:
To give up chainotte brick particulate material 82 parts, petroleum coke powder 4 parts, CA-50 cement 10 parts, calcined bauxite in powder 9 parts, fine silica powder 3 parts, barite part 2 parts, carries out batching mixing.
Obtain high alumina castable.
embodiment 3:
A method for refractory materials recycling, its step is as follows:
(1) pre-treatment of discarded clay brick:
The method of mechanical grinding is adopted to remove the impurity of its surface attachment the clay brick of recovery; Then adopt jaw crusher, oppositely rolling roller crusher by broken for the clay brick reclaimed, sort out impurity, carries out iron removal by magnetic separation, obtains the particulate material of 3mm-5mm;
(2) prepare burden according to following parts by weight:
To give up chainotte brick particulate material 81 parts, petroleum coke powder 3 parts, CA-50 cement 10 parts, calcined bauxite in powder 10 parts, fine silica powder 4 parts, barite part 2 parts, carries out batching mixing.
Obtain high alumina castable.
embodiment 4:
A method for refractory materials recycling, its step is as follows:
(1) pre-treatment of discarded clay brick:
The method of mechanical grinding is adopted to remove the impurity of its surface attachment the clay brick of recovery; Then adopt jaw crusher, oppositely rolling roller crusher by broken for the clay brick reclaimed, sort out impurity, carries out iron removal by magnetic separation, obtains the particulate material of 3mm-5mm;
(2) prepare burden according to following parts by weight:
To give up chainotte brick particulate material 79 parts, petroleum coke powder 4 parts, CA-50 cement 10 parts, calcined bauxite in powder 11 parts, fine silica powder 5 parts, barite part 1 part, carries out batching mixing.
Obtain high alumina castable.
embodiment 5:
A method for refractory materials recycling, its step is as follows:
(1) pre-treatment of discarded clay brick:
The method of mechanical grinding is adopted to remove the impurity of its surface attachment the clay brick of recovery; Then adopt jaw crusher, oppositely rolling roller crusher by broken for the clay brick reclaimed, sort out impurity, carries out iron removal by magnetic separation, obtains the particulate material of 3mm-5mm;
(2) prepare burden according to following parts by weight:
To give up chainotte brick particulate material 85 parts, petroleum coke powder 3 parts, CA-50 cement 10 parts, calcined bauxite in powder 5 parts, fine silica powder 5 parts, barite part 2 parts, carries out batching mixing.
Obtain high alumina castable.
embodiment 6 index is tested and assessed:
What obtained by embodiment 1-5 is dry mixed evenly in stirrer, then add appropriate water and fully stir the sample that after vibration is shaped to mm × 160,20mm × 60 mm, the demoulding after maintenance 24 h under room temperature, dry through 110 DEG C of 24 h, at 1 300,1 400 and 1 450 DEG C, be incubated 3 h thermal treatments respectively, heat-up rate controls at 200 DEG C per hour.
The folding strength of sample is measured according to GB/T 3001-2007; The compressive strength of sample is measured according to GB/T 5072-2008.
Visible, the high alumina castable that the present invention obtains has very outstanding folding strength and compressive strength, in process furnace, permanent ladle layer, other permanent layer etc., has good market outlook.High-alumina refractory mould material extensively can be used to power station, boiler, casting furnace, process furnace, soaking pit, and the furnace lining such as heat treatment furnace and induction furnace different sites is selected.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (3)
1. a method for refractory materials recycling, its step is as follows:
(1) pre-treatment of discarded clay brick:
The method of mechanical grinding is adopted to remove the impurity of its surface attachment the clay brick of recovery; Then adopt jaw crusher, oppositely rolling roller crusher by broken for the clay brick reclaimed, sort out impurity, carries out iron removal by magnetic separation, obtains particulate material;
(2) prepare burden according to following parts by weight:
To give up chainotte brick particulate material, petroleum coke powder, CA-50 cement, calcined bauxite in powder, fine silica powder part, barite part, carries out batching mixing.
2. method according to claim 1, wherein:
Step (1) is: the particulate material obtaining 3mm-5mm;
Step (2) is: chainotte brick particulate material 79-85 part of giving up, petroleum coke powder 3-5 part, CA-50 cement 10 parts, calcined bauxite in powder 5-12 part, fine silica powder 2-5 part, barite part 1-2 part, carries out batching mixing.
3. the method described in claim 1-2 reclaims the high alumina castable obtained.
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| CN201510351026.5A CN104961482A (en) | 2015-06-24 | 2015-06-24 | Refractory material recycling technological process |
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| CN201510351026.5A CN104961482A (en) | 2015-06-24 | 2015-06-24 | Refractory material recycling technological process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107716515A (en) * | 2017-10-30 | 2018-02-23 | 赵鸿恩 | The waste and old regeneration and treatment technique of resistance to material and its equipment |
| CN110922198A (en) * | 2019-12-16 | 2020-03-27 | 安徽工业大学 | Method for regenerating aluminum-silicon waste refractory aggregate |
| CN112142483A (en) * | 2020-09-18 | 2020-12-29 | 云南永昌硅业股份有限公司 | Preparation method of hole-plugging mud ball suitable for industrial silicon smelting silicon |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101139208A (en) * | 2006-09-05 | 2008-03-12 | 宝山钢铁股份有限公司 | Low-cost fire-resistant pouring material and method for making same |
| CN101585710A (en) * | 2008-05-23 | 2009-11-25 | 宝山钢铁股份有限公司 | Refractory material for coal loading port of coke oven |
| CN102218435A (en) * | 2011-04-19 | 2011-10-19 | 上海德滨环保科技有限公司 | Method for recycling waste clay |
-
2015
- 2015-06-24 CN CN201510351026.5A patent/CN104961482A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101139208A (en) * | 2006-09-05 | 2008-03-12 | 宝山钢铁股份有限公司 | Low-cost fire-resistant pouring material and method for making same |
| CN101585710A (en) * | 2008-05-23 | 2009-11-25 | 宝山钢铁股份有限公司 | Refractory material for coal loading port of coke oven |
| CN102218435A (en) * | 2011-04-19 | 2011-10-19 | 上海德滨环保科技有限公司 | Method for recycling waste clay |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107716515A (en) * | 2017-10-30 | 2018-02-23 | 赵鸿恩 | The waste and old regeneration and treatment technique of resistance to material and its equipment |
| CN110922198A (en) * | 2019-12-16 | 2020-03-27 | 安徽工业大学 | Method for regenerating aluminum-silicon waste refractory aggregate |
| CN112142483A (en) * | 2020-09-18 | 2020-12-29 | 云南永昌硅业股份有限公司 | Preparation method of hole-plugging mud ball suitable for industrial silicon smelting silicon |
| CN112142483B (en) * | 2020-09-18 | 2022-08-02 | 云南永昌硅业股份有限公司 | Preparation method of hole-plugging mud ball suitable for industrial silicon smelting silicon |
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Application publication date: 20151007 |