CN101747061A - Formula of magnesium dolomite tar firebrick and production method thereof - Google Patents
Formula of magnesium dolomite tar firebrick and production method thereof Download PDFInfo
- Publication number
- CN101747061A CN101747061A CN200810080174A CN200810080174A CN101747061A CN 101747061 A CN101747061 A CN 101747061A CN 200810080174 A CN200810080174 A CN 200810080174A CN 200810080174 A CN200810080174 A CN 200810080174A CN 101747061 A CN101747061 A CN 101747061A
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- China
- Prior art keywords
- dolomite
- tar
- firebrick
- sand
- magnesium
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Abstract
A formula of magnesium dolomite tar firebrick comprises the following components in percentage by weight: 55-70 parts of dolomite sand, 25-40 parts of magnesite and 3-20 parts of paper pulp. Primary crushing dolomite is sintered at the temperature of 1300-2000 DEG C, and sintered raw material is fine crushed to prepare granular dolomite sand; paper pulp and magnesite powder are added to the granular dolomite sand according to the formula to be evenly mixed to prepare a green brick; the green brick is sintered at the temperature of 1300-1500 DEG C and is dipped with tar after being cooled to prepare the magnesium dolomite tar firebrick product. The invention has the advantages of strong fire-resistant slag resistance, high temperature-resistant temperature, high mechanical strength, simple production method and wide raw material resource.
Description
Technical field:
The present invention relates to a kind of prescription and production method thereof of magnesium dolomite tar firebrick, belong to fire resisting material field.
Technical background:
Refractory brick is widely used in high temperature, the contour hot equipment of boiler and the building.Existing refractory brick exists heatproof not high enough, and slag resistance is poor, problem such as the strength retrogression is serious during high temperature, and some special quality fire-brick complex manufacturing technology, technical qualification harshness, 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, the prescription and the production method thereof of a kind of caustic dolomite sand tar refractory brick of making by reasonable interpolation magnesia, paper pulp and dipping tar.
Dolomite sand is that technological processs such as the rock warp of gathering to come from the carbonate mine of calcic, magnesium is slightly broken, sintering make, dolomite calcination is in the time of 700-900 ℃, become calcium oxide and magnesian mixture, both caustic dolomites, when being calcined to 1500 ℃, magnesium oxide becomes magnesite, calcium oxide 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 production method of caustic dolomite sand tar refractory brick of the present invention is as follows:
(1) rhombspar after thick the breaking carefully breaks, makes 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, make adobe, at 1300-1500 ℃ of following sintering, cooling back dipping tar is made the caustic dolomite sand tar refractory brick product.
The invention has the advantages that fire-resistant slag resistance is strong, heatproof temperature height, the physical strength height, production method is simple, raw material sources are extensive, and save 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, makes 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, make adobe, at 1300 ℃ of following sintering, cooling back dipping tar is made the caustic dolomite sand tar refractory brick product.
Embodiment 2:
(1) rhombspar after thick the breaking carefully breaks, makes 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, make adobe, at 1400 ℃ of following sintering, cooling back dipping tar is made the caustic dolomite sand tar refractory brick product.
Embodiment 3:
(1) rhombspar after thick the breaking carefully breaks, makes 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, make adobe, at 1500 ℃ of following sintering, cooling back dipping tar is made the caustic dolomite sand tar refractory brick product.
Embodiment 4:
(1) rhombspar after thick the breaking carefully breaks, makes 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, make adobe, at 1450 ℃ of following sintering, cooling back dipping tar is made the caustic dolomite sand tar refractory brick product.
Claims (2)
1. the prescription of a 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 prescription production 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, makes 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, make adobe, at 1300-1500 ℃ of following sintering, cooling back dipping tar is made the caustic dolomite sand tar refractory brick product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810080174A CN101747061A (en) | 2008-12-13 | 2008-12-13 | Formula of magnesium dolomite tar firebrick and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810080174A CN101747061A (en) | 2008-12-13 | 2008-12-13 | Formula of magnesium dolomite tar firebrick and production method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101747061A true CN101747061A (en) | 2010-06-23 |
Family
ID=42474756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810080174A Pending CN101747061A (en) | 2008-12-13 | 2008-12-13 | Formula of magnesium dolomite tar firebrick and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101747061A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104892012A (en) * | 2015-05-26 | 2015-09-09 | 柳州市亿廷贸易有限责任公司 | Dolomite refractory brick |
| 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 |
-
2008
- 2008-12-13 CN CN200810080174A patent/CN101747061A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104892012A (en) * | 2015-05-26 | 2015-09-09 | 柳州市亿廷贸易有限责任公司 | Dolomite refractory brick |
| 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 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100623 |