CN102531640A - Magnesite dolomite tar refractory brick and production method thereof - Google Patents
Magnesite dolomite tar refractory brick and production method thereof Download PDFInfo
- Publication number
- CN102531640A CN102531640A CN2010105871941A CN201010587194A CN102531640A CN 102531640 A CN102531640 A CN 102531640A CN 2010105871941 A CN2010105871941 A CN 2010105871941A CN 201010587194 A CN201010587194 A CN 201010587194A CN 102531640 A CN102531640 A CN 102531640A
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- China
- Prior art keywords
- dolomite
- tar
- refractory brick
- magnesite
- sand
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Abstract
The invention relates to a magnesite dolomite tar refractory brick which comprises the following components in parts by weight: 55-70 parts of dolomite sand, 25-40 parts of magnesite and 3-20 parts of paper pulp. A magnesite dolomite sand tar refractory brick product is prepared by the following steps: sintering dolomite after coarse crushing at the temperature of 1300-2000 DEG C, performing fine-crushing on the sintered raw material to prepare granular dolomite sand, adding the paper pulp and magnesite powder into the granular dolomite sand according to a formula, uniformly mixing to prepare a green brick, sintering at the temperature of 1300-1500 DEG C, cooling and finally dipping in tar. The magnesite dolomite tar refractory brick disclosed by the invention has the advantages of strong fire resistance and slag resistance, high temperature resistance and high mechanical strength, and the production method of the magnesite dolomite tar refractory brick is simple and the sources of raw materials of the magnesite dolomite tar refractory brick are wide.
Description
Technical field
The present invention relates to a kind of magnesium dolomite tar firebrick and working method thereof, belong to fire resisting material field.
Background technology
Refractory brick is widely used in high heat equipment such as high temperature, boiler and the building.Problems such as existing refractory brick exists heatproof not high enough, and slag resistance is poor, and the strength retrogression is serious during high temperature, and some special quality fire-brick complex manufacturing technology, technical qualification are harsh, defectives such as production cost height.
Summary of the invention
The object of the present invention is to provide a kind of is main raw material with the dolomite sand, a kind of caustic dolomite sand tar refractory brick and the working method thereof processed through reasonable interpolation magnesia, paper pulp and dipping tar.
Dolomite sand is that technological processs such as the rock warp of from the carbonate mine of calcic, magnesium, gathering is slightly broken, sintering make, and dolomite calcination becomes quicklime and magnesian mixture in the time of 700-900 ℃; Both caustic dolomites, when being calcined to 1500 ℃, Natural manganese dioxide becomes magnesite; Quicklime transfers xln to; Its density of texture is strong, and particularly refractoriness can reach 2300 ℃, and slag resistance is also stronger.
The refractory brick composition of raw materials:
Dolomite sand 55-70 part, magnesia 25-40 part, paper pulp 3-20 part.
The working method of caustic dolomite sand tar refractory brick of the present invention is following:
(1) rhombspar after thick the breaking carefully breaks, processes the particulate state dolomite sand at 1300-2000 ℃ of sintering temperature with the agglomerating raw material.
(2) add paper pulp and magnesia powder by prescription in the particulate state dolomite sand, mix, process adobe, at 1300-1500 ℃ of following sintering, cooling back dipping tar is processed the caustic dolomite sand tar refractory brick product.
The invention has the advantages that fire-resistant slag resistance is strong, the heatproof temperature is high, and physical strength is high; Working method is simple; Raw material sources are extensive, and practice thrift natural resources, can be widely used at the bottom of thomas converter furnace lining, basic open-hearth furnace furnace bottom, the Sheng property electric furnace; And converter, converter lining, cement rotary kiln etc., and long service life.
Embodiment
Embodiment 1:
(1) rhombspar after thick the breaking carefully breaks, processes the particulate state dolomite sand at 1300 ℃ of sintering temperatures with the agglomerating raw material.
(2) take by weighing 55 kilograms of dolomite sands, 25 kilograms in magnesia, paper pulp and mix for 3 kilograms, process adobe, at 1300 ℃ of following sintering, cooling back dipping tar is processed the caustic dolomite sand tar refractory brick product.
Embodiment 2:
(1) rhombspar after thick the breaking carefully breaks, processes the particulate state dolomite sand at 1500 ℃ of sintering temperatures with the agglomerating raw material.
(2) take by weighing 70 kilograms of dolomite sands, 40 kilograms in magnesia, paper pulp and mix for 20 kilograms, process adobe, at 1400 ℃ of following sintering, cooling back dipping tar is processed the caustic dolomite sand tar refractory brick product.
Embodiment 3:
(1) rhombspar after thick the breaking carefully breaks, processes the particulate state dolomite sand at 1800 ℃ of sintering temperatures with the agglomerating raw material.
(2) take by weighing 60 kilograms of dolomite sands, 30 kilograms in magnesia, paper pulp and mix for 8 kilograms, process adobe, at 1500 ℃ of following sintering, cooling back dipping tar is processed the caustic dolomite sand tar refractory brick product.
Embodiment 4:
(1) rhombspar after thick the breaking carefully breaks, processes the particulate state dolomite sand at 2000 ℃ of sintering temperatures with the agglomerating raw material.
(2) take by weighing 65 kilograms of dolomite sands, 35 kilograms in magnesia, paper pulp and mix for 16 kilograms, process adobe, at 1450 ℃ of following sintering, cooling back dipping tar is processed the caustic dolomite sand tar refractory brick product.
Claims (2)
1. magnesium dolomite tar firebrick, it is characterized in that respectively forming weight part is dolomite sand 55-70 part, magnesia 25-40 part, paper pulp 3-20 part.
2. the working method of a kind of magnesium dolomite tar firebrick as claimed in claim 1 is characterized in that comprising the steps:
(1) rhombspar after thick the breaking carefully breaks, processes the particulate state dolomite sand at 1300-2000 ℃ of sintering temperature with the agglomerating raw material;
(2) add paper pulp and magnesia powder by prescription in the particulate state dolomite sand, mix, process adobe, at 1300-1500 ℃ of following sintering, cooling back dipping tar is processed the caustic dolomite sand tar refractory brick product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105871941A CN102531640A (en) | 2010-12-14 | 2010-12-14 | Magnesite dolomite tar refractory brick and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105871941A CN102531640A (en) | 2010-12-14 | 2010-12-14 | Magnesite dolomite tar refractory brick and production method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102531640A true CN102531640A (en) | 2012-07-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105871941A Pending CN102531640A (en) | 2010-12-14 | 2010-12-14 | Magnesite dolomite tar refractory brick and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102531640A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104892011A (en) * | 2015-05-26 | 2015-09-09 | 柳州市亿廷贸易有限责任公司 | Preparation method of dolomite refractory brick |
| CN108101514A (en) * | 2017-11-20 | 2018-06-01 | 武汉钢铁集团耐火材料有限责任公司 | To soak the magnesia of tar and pitch as low carbon magnesia carbon brick of aggregate and preparation method thereof |
-
2010
- 2010-12-14 CN CN2010105871941A patent/CN102531640A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104892011A (en) * | 2015-05-26 | 2015-09-09 | 柳州市亿廷贸易有限责任公司 | Preparation method of dolomite refractory brick |
| CN108101514A (en) * | 2017-11-20 | 2018-06-01 | 武汉钢铁集团耐火材料有限责任公司 | To soak the magnesia of tar and pitch as low carbon magnesia carbon brick of aggregate and preparation method thereof |
| CN108101514B (en) * | 2017-11-20 | 2021-01-08 | 武汉钢铁集团耐火材料有限责任公司 | Low-carbon magnesia carbon brick with tar and asphalt-soaked magnesia as aggregate and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120704 |