CN108424127A - A kind of processing method of useless magnesite-chrome brick - Google Patents
A kind of processing method of useless magnesite-chrome brick Download PDFInfo
- Publication number
- CN108424127A CN108424127A CN201810201055.7A CN201810201055A CN108424127A CN 108424127 A CN108424127 A CN 108424127A CN 201810201055 A CN201810201055 A CN 201810201055A CN 108424127 A CN108424127 A CN 108424127A
- Authority
- CN
- China
- Prior art keywords
- brick
- chrome
- chrome brick
- magnesite
- useless magnesite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000011449 brick Substances 0.000 title claims abstract description 41
- 238000003672 processing method Methods 0.000 title claims abstract description 9
- 238000001354 calcination Methods 0.000 claims abstract description 15
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000005864 Sulphur Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 239000011651 chromium Substances 0.000 claims abstract description 9
- 239000004576 sand Substances 0.000 claims abstract description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 6
- 238000004064 recycling Methods 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 4
- -1 that is Substances 0.000 claims abstract description 3
- 238000007689 inspection Methods 0.000 claims description 6
- QDOXWKRWXJOMAK-UHFFFAOYSA-N chromium(III) oxide Inorganic materials O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 4
- 238000003837 high-temperature calcination Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 9
- 238000007664 blowing Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000011819 refractory material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- NACUKFIFISCLOQ-UHFFFAOYSA-N [Mg].[Cr] Chemical compound [Mg].[Cr] NACUKFIFISCLOQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010951 particle size reduction Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B35/04—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
- C04B35/043—Refractories from grain sized mixtures
- C04B35/047—Refractories from grain sized mixtures containing chromium oxide or chrome ore
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The present invention relates to a kind of processing methods of useless magnesite-chrome brick, include the following steps：1) Cr is collected2O3Useless magnesite-chrome brick, that is, chromium 18 brick and chromium 20 brick of the weight percent 18% or more, and useless magnesite-chrome brick is broken into the block that granularity is more than or equal to 40mm in crusher；2) aquation sulphur removal is carried out to broken useless magnesite-chrome brick particle watering, is spontaneously dried in outdoor after the completion of aquation sulphur removal；3) the useless magnesite-chrome brick particle after drying is calcined in high temperature vertical kiln, calcination temperature is controlled at 1500 DEG C or more；If 4) by the raw material Cr after calcining2O3Weight percent content reach 18% or more and then can be used normally；Raw material after calcining is crushed and forms magnesia-chrome sand.Advantage is：Easy to operate, the cost of material compared with buying is low, can greatly save cost of material, realize the recycling of resource, economize on resources.
Description
Technical field
The present invention relates to a kind of processing methods of useless magnesite-chrome brick.
Background technology
Magnesite-chrome brick is inorganic non-metallic material, alkaline refractory product, has high refractoriness, resistant to corrosion and anti-strip etc. excellent
Performance is global steel refining and the irreplaceable key basic material of nonferrous metallurgy.The new work applied in coloured industry
Skill capital equipment includes oxygen bottom blowing smelter, polynary sleeve structure oxygen rifle, and lead oxidation slag casts slag machine, band membrane wall vertical ascent
The waste heat boiler of section, new structure blast furnace etc..The core equipment of new process is oxygen bottom blowing smelter.Oxygen bottom-blowing-
Blast furnace reduction refining lead new process is the refining lead new technology of China's independent development, has independent intellectual property right.Its core is by oxygen
Change and reduction is reacted in different meltings respectively.The technique can be well solved smelting lead SO2 relieving haperacidity and lead fume dirt
Pollution problem has the characteristics of technological process is simple, environment is good, can realize clean manufacturing.
With the development of technology with the expansion of life requirement, the needs of high value added product constantly promote, and oxygen bottom blowing is molten
The produce load of furnace is constantly in increase state, and the function due to equipment is being continuously improved, to the performance of refractory material
It also has higher requirement.The refractory material of oxygen bottom blowing smelter, the melting loss that high temperature is subjected to due to the use of in corrode and strong
Process is damaged in strong thermal shock, therefore it is required that material has excellent erosion-resisting characteristics, good elevated temperature strength, meanwhile, also require
Material has enough thermal shock resistances.The magnesite-chrome brick of superhigh temperature firing, because with required excellent performance, the past always
It is selected as the most suitable fire proof material of furnace lining of oxygen bottom blowing smelter equipment all over the world, is still oxygen bottom blowing even to this day
The most common refractory material of smelting furnace equipment application.
But in recent years due to shortage of mineral resources, cost of material is constantly in ascendant trend, and some has even risen 3~4 times.
But the price of finished bricks can rise up, this just needs enterprise to be adjusted, and the recycling for carrying out useless brick carrys out cost-effective ability
It will not lose.My company adheres to developing for many years high-new refractory material always, services international and domestic metallurgical and building material industry,
The capacity for technological innovation of company and the marketability of new product also obtain the consistent approval of user.For magnesia-chrome sand raw material valence
Lattice continue not under problem, Haicheng Zhongxing High-Grade Magnesia Brick Co., Ltd. proposes secondary use and its life of a kind of useless magnesite-chrome brick
Production method.
Invention content
In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a kind of processing methods of useless magnesite-chrome brick, and give up magnesium chromium
Brick reaches the index of magnesia-chrome sand by sulphur removal, except impurity etc. reason.
To achieve the above object, the invention is realized by the following technical scheme：
A kind of processing method of useless magnesite-chrome brick, includes the following steps：
1) recycling classification：Collect Cr2O3Useless magnesite-chrome brick, that is, chromium 18 brick and chromium 20 brick of the weight percent 18% or more,
And useless magnesite-chrome brick is broken into the block that granularity is more than or equal to 40mm in crusher；
2) aquation sulphur removal：Aquation sulphur removal is carried out to broken useless magnesite-chrome brick particle watering, in room after the completion of aquation sulphur removal
It is outer to be spontaneously dried；
3) high-temperature calcination：Useless magnesite-chrome brick particle after drying is calcined in high temperature vertical kiln, calcination temperature control exists
1500 DEG C or more, the impurity being mingled in waste material is removed, the material quality higher after calcining is made；
4) inspection is chemically examined：Raw material after calcining is subjected to inspection chemical examination, if Cr2O3Weight percent content reach 18%
It then can be used normally above；
5) it is crushed and uses：Raw material after calcining is crushed and forms magnesia-chrome sand.
Compared with prior art, the beneficial effects of the invention are as follows：
Processing method of the present invention is easy to operate, and the cost of material compared with buying is low, can greatly save cost of material, realize
The recycling of resource, economizes on resources；The magnesia-chrome sand of finished product can be used for making the raw material of fused magnesite, magnesite-chrome brick etc., enhance enterprise
The competitiveness of industry.
Specific implementation mode
The present invention is described in detail below, it should be noted that the implementation embodiment party not limited to the following of the present invention
Formula.
Embodiment：
The processing method of useless magnesite-chrome brick, includes the following steps：
1) Cr is collected2O3Weight percent in 18% or more useless magnesite-chrome brick, big is then broken into crusher
Grain, magnesite-chrome brick index of giving up such as table 1；
Table 1：
2) aquation sulphur removal：Broken useless magnesite-chrome brick particle watering is subjected to aquation sulphur removal, it is dry after the completion of aquation sulphur removal；
3) high-temperature calcination：Useless magnesite-chrome brick particle after drying is calcined in high temperature vertical kiln, calcination temperature 1500-
1550 DEG C, the impurity being mingled in waste material is removed, the material quality higher after calcining is made；
4) inspection is chemically examined：Useless magnesite-chrome brick particle after the completion of calcining is subjected to inspection chemical examination, reaches the finger of magnesite-chrome brick raw material
Mark (Cr2O3Weight percent content reach 18% or more), then can be crushed normal use；Otherwise other raw materials recoveries are used as；
Useless magnesite-chrome brick particle index is shown in Table 3 after the calcining to touch the mark；
Table 3
5) it is crushed and uses：By the useless magnesite-chrome brick particle calcined by particle size reduction, magnesia-chrome sand is formed.
Claims (1)
1. a kind of processing method of useless magnesite-chrome brick, which is characterized in that include the following steps：
1) recycling classification：Collect Cr2O3Useless magnesite-chrome brick, that is, chromium 18 brick and chromium 20 brick of the weight percent 18% or more, and will
Useless magnesite-chrome brick is broken into the block that granularity is more than or equal to 40mm in crusher；
2) aquation sulphur removal：Aquation sulphur removal is carried out to broken useless magnesite-chrome brick particle watering, after the completion of aquation sulphur removal outdoor into
Row spontaneously dries；
3) high-temperature calcination：Useless magnesite-chrome brick particle after drying is calcined in high temperature vertical kiln, calcination temperature is controlled 1500
DEG C or more, the impurity being mingled in waste material is removed, the material quality higher after calcining is made；
4) inspection is chemically examined：Raw material after calcining is subjected to inspection chemical examination, if Cr2O3Weight percent content reach 18% or more
Then it can be used normally；
5) it is crushed and uses：Raw material after calcining is crushed and forms magnesia-chrome sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810201055.7A CN108424127A (en) | 2018-03-12 | 2018-03-12 | A kind of processing method of useless magnesite-chrome brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810201055.7A CN108424127A (en) | 2018-03-12 | 2018-03-12 | A kind of processing method of useless magnesite-chrome brick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108424127A true CN108424127A (en) | 2018-08-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810201055.7A Pending CN108424127A (en) | 2018-03-12 | 2018-03-12 | A kind of processing method of useless magnesite-chrome brick |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108424127A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114147040A (en) * | 2021-12-29 | 2022-03-08 | 中冶焦耐(大连)工程技术有限公司 | Integrated treatment device and method for waste magnesia carbon bricks |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3378385A (en) * | 1966-06-13 | 1968-04-16 | Harbison Walker Refractories | High alumina brick |
| CN103011853A (en) * | 2012-11-27 | 2013-04-03 | 浙江铭德新材科技有限公司 | Manufacturing method of magnesium-calcium regeneration brick |
| CN107365161A (en) * | 2017-07-17 | 2017-11-21 | 辽宁中镁高温材料有限公司 | A kind of copper composite high-performance magnesite-chrome brick and its manufacture method |
-
2018
- 2018-03-12 CN CN201810201055.7A patent/CN108424127A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3378385A (en) * | 1966-06-13 | 1968-04-16 | Harbison Walker Refractories | High alumina brick |
| CN103011853A (en) * | 2012-11-27 | 2013-04-03 | 浙江铭德新材科技有限公司 | Manufacturing method of magnesium-calcium regeneration brick |
| CN107365161A (en) * | 2017-07-17 | 2017-11-21 | 辽宁中镁高温材料有限公司 | A kind of copper composite high-performance magnesite-chrome brick and its manufacture method |
Non-Patent Citations (4)
| Title |
|---|
| 吕兆斌: "《隧道窑》", 30 April 1983, 冶金工业出版社 * |
| 张朝晖: "《冶金环保与资源综合利用》", 31 January 2016, 冶金工业出版社 * |
| 林彬荫: "《耐火材料原料》", 30 November 2015, 冶金工业出版社 * |
| 钟黎声 等: ""废镁铬砖加入量对镁质浇注料性能的影响"", 《硅酸盐学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114147040A (en) * | 2021-12-29 | 2022-03-08 | 中冶焦耐(大连)工程技术有限公司 | Integrated treatment device and method for waste magnesia carbon bricks |
| CN114147040B (en) * | 2021-12-29 | 2024-06-11 | 中冶焦耐(大连)工程技术有限公司 | Integrated treatment device and method for waste magnesia carbon bricks |
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Application publication date: 20180821 |
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