CN103936447B - Bag mouth magnesia carbon brick adding agalmatolite and preparation method thereof - Google Patents
Bag mouth magnesia carbon brick adding agalmatolite and preparation method thereof Download PDFInfo
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- CN103936447B CN103936447B CN201410152198.5A CN201410152198A CN103936447B CN 103936447 B CN103936447 B CN 103936447B CN 201410152198 A CN201410152198 A CN 201410152198A CN 103936447 B CN103936447 B CN 103936447B
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Abstract
The invention discloses a kind of bag mouth magnesia carbon brick adding agalmatolite, be prepared from by the raw material of following weight proportioning: the waste magnesia carbon brick particle 15-30% of 5-3mm, the waste magnesia carbon brick particle 15-30% of 3-1mm, the waste magnesia carbon brick particle 15-25% of 1-0mm, the agalmatolite particle 10-20% of 3-1mm, additive 0-4%, waste magnesia carbon brick fine powder 10-25%, bonding agent 3.5-4.5%, its preparation method comprise the steps: material sorting slagging-off, broken pulverize and sieve fraction, undertaken preparing burden by proportioning and stir, pressing machine compression moulding, drying and thermal treatment.The present invention improves expansion character by adding a certain amount of agalmatolite, efficiently solves waste magnesia carbon brick and contains the problem that slag and impurity and swell increment deficiency make to be directly used in cycling and reutilization; The low temperature phase change of agalmatolite facilitates the sintering of magnesia carbon brick, and intensity is higher, and especially under high temperature, reacted bonding strength is better, can be applied to the bag port part of ladle, economize on resources, emissions reduction.
Description
Technical field
The present invention relates in refractory materials technical field of producing, refer in particular to a kind of bag mouth magnesia carbon brick adding agalmatolite and preparation method thereof.
Background technology
China's steel industry output is huge, the magnesia carbon brick that annual use is discarded reaches more than 1,000 ten thousand tons, the process of this material brings very large trouble to iron and steel enterprise, through the change of refractory materials bidding mode, the development contracted along with functional totality and maturation, more and more urgent, more and more important to refractory materials recovery and reusing and recycling technology.Because used refractory only passes through simple break process, do not carry out precision work, limit its usage quantity and use range, cause the Returning utilization rate of used refractory lower, cause a large amount of wastings of resources and destroy the sanitation and hygiene of plant area.Therefore, it is significant for carrying out regeneration research to used refractory, and regenerative magnesia-carbon brick has good market and prospect.
At present, mainly there is a difficult problem for physics and chemistry two aspect in the recycling aspect of magnesia carbon brick after a procedure, and generalized case discards or sells as the base-material cheapness in other industry field.Often the very thin slag of one deck is stained with discontinuously mainly due on working face in physical cause, also be exactly magnesia carbon brick dross, simultaneously because brick is corroded rear generation one deck metamorphic layer by slag, be mainly eutectic, this layer of slag and metamorphic layer are unfavorable for the regeneration of refractory materials; Its non-working surface often bleaches because of oxidation, makes the low of the more original magnesia carbon brick of its carbon content, and inserting mortar material magnesia sintering rear section sticks on non-working surface simultaneously; Between brick and brick or in the crack of brick, press from both sides one deck iron plate sometimes, some adhesion chamotte.Chemical principle because of in cause the significantly change of composition in magnesia carbon brick due to the particular surroundings of metallurgical furnace, cannot shaping or cracking if directly produce that magnesia carbon brick can cause as raw material, fire performance crosses the phenomenons such as difference.
Summary of the invention
Contain slag and impurity to solve waste and old magnesia carbon brick and cause the swell increment of magnesia carbon brick not enough, make can not be directly used in cycling and reutilization in the problem of steel ladle opening, the present invention proposes a kind of bag mouth magnesia carbon brick adding agalmatolite and preparation method thereof, improving expansion character by adding a certain amount of agalmatolite, efficiently solving waste magnesia carbon brick and containing the problem that slag and impurity and swell increment deficiency make to be directly used in cycling and reutilization.
The technical solution adopted in the present invention is: a kind of bag mouth magnesia carbon brick adding agalmatolite, be prepared from by the raw material of following weight proportioning: the waste magnesia carbon brick particle 15-30% of particle diameter 3-5mm, the waste magnesia carbon brick particle 15-30% of particle diameter 1-3mm, particle diameter is less than the waste magnesia carbon brick particle 15-25% of 1mm, the agalmatolite particle 10-20% of particle diameter 1-3mm, bonding agent 0-4%, waste magnesia carbon brick powder 0-25%, additive 3.5-4.5%.
The present invention improves the expansion character of magnesia carbon brick by adding a certain amount of agalmatolite, the low temperature phase change of agalmatolite facilitates the sintering of magnesia carbon brick, and intensity is higher, and especially under high temperature, reacted bonding strength is better.After adding pyrophyllite material, magnesia carbon brick expands and becomes large, is applied to the bag port part of ladle, can effectively fixes steel ladle opening position, an effect of contraction is also played to magnesia carbon brick below, especially reduces and cause parallel seam problem with expanding with heat and contract with cold in the magnesia carbon brick use procedure avoided below; Economize on resources simultaneously, emissions reduction.
As preferably, described additive is carborundum powder or silica flour.Carborundum powder or silica flour effectively can be in harmonious proportion each component.
As preferably, described bonding agent is resin.Optimal bonding agent is resol.
Add an its preparation method for the bag mouth magnesia carbon brick of agalmatolite as above, comprise following preparation process:
(1) material sorting slagging-off: by waste magnesia carbon brick sorting, first removes dust, earth and inclusion that its surface is stained with one by one, then removes slag blanket and metamorphic layer, carry out hydration process;
(2) broken pulverizing and sieve fraction: the broken pulverizing of several times is carried out to waste magnesia carbon brick with crusher, and carry out magnetic separation, hydration process and drying treatment, then be sieved into particle diameter through double-deck reciprocating sieve and be less than 1mm, particle diameter 1-3mm, the waste magnesia carbon brick particle of particle diameter 3-5mm tri-kinds of diameters and pulverous waste magnesia carbon brick powder;
(3) undertaken preparing burden and stirring by proportioning: weight proportion is the waste magnesia carbon brick particle 15-30% of particle diameter 3-5mm, the waste magnesia carbon brick particle 15-30% of particle diameter 1-3mm, particle diameter is less than the waste magnesia carbon brick particle 15-25% of 1mm, the agalmatolite particle 10-20% of particle diameter 1-3mm, additive 0-4%, waste magnesia carbon brick powder 0-25%, tackiness agent 3.5-4.5%;
(4) pressing machine compression moulding;
(5) dry and thermal treatment.
As preferably, in described step (5), heat treated temperature is 160 DEG C to 200 DEG C.Wherein, optimum thermal treatment temp is 180 DEG C.
The invention has the beneficial effects as follows: improve expansion character by adding a certain amount of agalmatolite, efficiently solving waste magnesia carbon brick and containing the problem that slag and impurity and swell increment deficiency make to be directly used in cycling and reutilization; The low temperature phase change of agalmatolite facilitates the sintering of magnesia carbon brick, and intensity is higher, and especially under high temperature, reacted bonding strength is better, can be applied to the bag port part of ladle, economize on resources, emissions reduction.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.
Embodiment 1
A kind of bag mouth magnesia carbon brick adding agalmatolite, be prepared from by the raw material of following weight proportioning: the waste magnesia carbon brick particle 30% of particle diameter 3-5mm, the waste magnesia carbon brick particle 10% of particle diameter 1-3mm, particle diameter is less than the waste magnesia carbon brick particle 15% of 1mm, the agalmatolite particle 15% of particle diameter 1-3mm, carborundum powder 4%, waste magnesia carbon brick powder 22.5%, resin 3.5%.
Add its preparation method of the bag mouth magnesia carbon brick of agalmatolite as above, preparation process is as follows:
(1) material sorting slagging-off: by waste magnesia carbon brick sorting, first removes dust, earth and inclusion that its surface is stained with one by one, then removes slag blanket and metamorphic layer, carry out hydration process;
(2) broken pulverizing and sieve fraction: the broken pulverizing of several times is carried out to waste magnesia carbon brick with crusher, and carry out magnetic separation, hydration process and drying treatment, be sieved into particle diameter through double-deck reciprocating sieve again and be less than 1mm, particle diameter 1-3mm, the waste magnesia carbon brick particle of particle diameter 3-5mm tri-kinds of diameters and pulverous waste magnesia carbon brick powder, choose;
(3) prepare burden and stir: by proportioning selection raw material, carrying out being deployed into brick material, and stir;
(4) pressing machine compression moulding: with pressing machine by the brick material compression moulding after stirring, form brick body;
(5) dry and thermal treatment: drying is carried out to the brick body after compression moulding, and heat-treats at the temperature of 180 DEG C.
Embodiment 2
A kind of bag mouth magnesia carbon brick adding agalmatolite, be prepared from by the raw material of following weight proportioning: the waste magnesia carbon brick particle 15% of particle diameter 3-5mm, the waste magnesia carbon brick particle 30% of particle diameter 1-3mm, particle diameter is less than the waste magnesia carbon brick particle 25% of 1mm, the agalmatolite particle 10% of particle diameter 1-3mm, silica flour 3%, waste magnesia carbon brick powder 12.5%, resin 4.5%.
Add its preparation method of the bag mouth magnesia carbon brick of agalmatolite as above, preparation process is as follows:
(1) material sorting slagging-off: by waste magnesia carbon brick sorting, first removes dust, earth and inclusion that its surface is stained with one by one, then removes slag blanket and metamorphic layer, carry out hydration process;
(2) broken pulverizing and sieve fraction: the broken pulverizing of several times is carried out to waste magnesia carbon brick with crusher, and carry out magnetic separation, hydration process and drying treatment, be sieved into particle diameter through double-deck reciprocating sieve again and be less than 1mm, particle diameter 1-3mm, the waste magnesia carbon brick particle of particle diameter 3-5mm tri-kinds of diameters and pulverous waste magnesia carbon brick powder, choose;
(3) prepare burden and stir: by proportioning selection raw material, carrying out being deployed into brick material, and stir;
(4) pressing machine compression moulding: with pressing machine by the brick material compression moulding after stirring, form brick body;
(5) dry and thermal treatment: drying is carried out to the brick body after compression moulding, and heat-treats at the temperature of 200 DEG C.
Embodiment 3
A kind of bag mouth magnesia carbon brick adding agalmatolite, be prepared from by the raw material of following weight proportioning: the waste magnesia carbon brick particle 30% of particle diameter 3-5mm, the waste magnesia carbon brick particle 15% of particle diameter 1-3mm, particle diameter is less than the waste magnesia carbon brick particle 25% of 1mm, the agalmatolite particle 20% of particle diameter 1-3mm, carborundum powder 1%, waste magnesia carbon brick powder 5%, resin 4%.
Add its preparation method of the bag mouth magnesia carbon brick of agalmatolite as above, preparation process is as follows:
(1) material sorting slagging-off: by waste magnesia carbon brick sorting, first removes dust, earth and inclusion that its surface is stained with one by one, then removes slag blanket and metamorphic layer, carry out hydration process;
(2) broken pulverizing and sieve fraction: the broken pulverizing of several times is carried out to waste magnesia carbon brick with crusher, and carry out magnetic separation, hydration process and drying treatment, be sieved into particle diameter through double-deck reciprocating sieve again and be less than 1mm, particle diameter 1-3mm, the waste magnesia carbon brick particle of particle diameter 3-5mm tri-kinds of diameters and pulverous waste magnesia carbon brick powder, choose;
(3) prepare burden and stir: by proportioning selection raw material, carrying out being deployed into brick material, and stir;
(4) pressing machine compression moulding: with pressing machine by the brick material compression moulding after stirring, form brick body;
(5) dry and thermal treatment: drying is carried out to the brick body after compression moulding, and heat-treats at the temperature of 160 DEG C.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within protection scope of the present invention.
Claims (1)
1. one kind adds its preparation method of the bag mouth magnesia carbon brick of agalmatolite, it is characterized in that: the bag mouth magnesia carbon brick adding agalmatolite, be prepared from by the raw material of following weight proportioning: the waste magnesia carbon brick particle 15-30% of particle diameter 3-5mm, the waste magnesia carbon brick particle 15-30% of particle diameter 1-3mm, particle diameter is less than the waste magnesia carbon brick particle 15-25% of 1mm, the agalmatolite particle 10-20% of particle diameter 1-3mm, additive 0-4%, waste magnesia carbon brick powder 0-25%, bonding agent 3.5-4.5%, described additive is carborundum powder or silica flour, and described bonding agent is resin;
Comprise following preparation process:
(1) material sorting slagging-off: by waste magnesia carbon brick sorting, first removes dust, earth and inclusion that its surface is stained with one by one, then removes slag blanket and metamorphic layer, carry out hydration process;
(2) broken pulverizing and sieve fraction: the broken pulverizing of several times is carried out to waste magnesia carbon brick with crusher, and carry out magnetic separation, hydration process and drying treatment, then be sieved into particle diameter through double-deck reciprocating sieve and be less than 1mm, particle diameter 1-3mm, the waste magnesia carbon brick particle of particle diameter 3-5mm tri-kinds of diameters and pulverous waste magnesia carbon brick powder;
(3) undertaken preparing burden and stirring by proportioning: weight proportion is the waste magnesia carbon brick particle 15-30% of particle diameter 3-5mm, the waste magnesia carbon brick particle 15-30% of particle diameter 1-3mm, particle diameter is less than the waste magnesia carbon brick particle 15-25% of 1mm, the agalmatolite particle 10-20% of particle diameter 1-3mm, additive 0-4%, waste magnesia carbon brick powder 0-25%, bonding agent 3.5-4.5%, described additive is carborundum powder or silica flour, and described bonding agent is resin;
(4) pressing machine compression moulding;
(5) dry and thermal treatment, heat treated temperature is 160 DEG C to 200 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410152198.5A CN103936447B (en) | 2014-04-16 | 2014-04-16 | Bag mouth magnesia carbon brick adding agalmatolite and preparation method thereof |
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| CN201410152198.5A CN103936447B (en) | 2014-04-16 | 2014-04-16 | Bag mouth magnesia carbon brick adding agalmatolite and preparation method thereof |
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| CN103936447A CN103936447A (en) | 2014-07-23 |
| CN103936447B true CN103936447B (en) | 2015-09-09 |
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| CN105347821A (en) * | 2015-11-09 | 2016-02-24 | 周维逊 | Production method for firebricks and production system for firebricks |
| CN111925189A (en) * | 2020-06-30 | 2020-11-13 | 辽宁东和新材料股份有限公司 | Composite magnesia carbon brick and preparation method thereof |
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| CN102942372A (en) * | 2012-10-12 | 2013-02-27 | 酒泉钢铁(集团)有限责任公司 | Manufacturing method for producing recycled magnesia carbon brick by using waste magnesia carbon brick as raw material |
| CN103467118B (en) * | 2013-08-29 | 2016-04-13 | 浙江长兴强立耐火材料有限公司 | A kind of high utilization rate regenerative magnesia-carbon brick and manufacture method thereof |
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Granted publication date: 20150909 Termination date: 20210416 |