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Forsterite refractory brick

A technology of forsterite and refractory bricks, which is applied in the field of refractory material manufacturing, can solve the problems of poor thermal stability, short service life and crack damage of refractory bricks, and achieve good thermal stability, low thermal conductivity and high softening temperature Effect

Inactive Publication Date: 2015-09-30
LIUZHOU YITING TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a forsterite refractory brick to solve the poor thermal stability of existing refractory bricks, which are used as lining materials for forging heating furnaces and cement kilns, and are prone to shrinkage and cracks at high temperatures damage, short service life

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0014] A forsterite refractory brick is made of the following raw materials in parts by weight: 700 kg of olivine sand, 150 kg of magnesium carbonate, 150 kg of magnesium oxide, and 100 kg of pulp; the magnesium oxide in this embodiment is lightly burned magnesia.

[0015] Weigh the raw materials according to the weight parts of the above-mentioned raw materials, put the olivine sand and magnesium carbonate into a wet mill for rolling, then add 1.5% water of the total weight of the olivine sand and magnesium carbonate, and then roll and add Lightly burned magnesia and pulp are mixed, pressed into bricks with a brick press, dried and placed in a firing kiln to be fired at high temperature, and cooled to room temperature to obtain the forsterite refractory brick.

Embodiment 2

[0017] A forsterite refractory brick is made of the following raw materials in parts by weight: 800 kg of olivine sand, 250 kg of magnesium carbonate, 200 kg of magnesium oxide, and 150 kg of pulp; the magnesium oxide in this embodiment is lightly burned magnesia.

[0018] Weigh raw materials according to the weight parts of the above-mentioned raw materials, put olivine sand and magnesium carbonate into a wet mill and roll them, then add 2% water of the total weight of olivine sands and magnesium carbonate, then roll them, add Lightly burned magnesia and pulp are mixed, and bricks are pressed into adobes by a brick press. After drying, the adobes are put into a firing kiln to be fired at high temperature, and cooled to room temperature to obtain the forsterite refractory brick.

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Abstract

The invention discloses a forsterite refractory brick and relates to the technical field of refractory material manufacture. The forsterite refractory brick is prepared from the following raw materials in parts by weight: 70-80 parts of olivine sand, 15-25 parts of magnesium carbonate, 15-20 parts of magnesium oxide and 10-15 parts of paper pulp; the forsterite refractory brick is prepared by virtue of the steps of batching, mixing, blank forming, drying and firing. Compared with the prior art, the forsterite refractory brick is high in refractoriness under load, does not shrink at a high temperature and is good in thermal stability; the forsterite refractory brick is used as a lining material of a forging heating furnace and a cement kiln, and can be prevented from crack damage due to shrinkage at a high temperature; as a result, the service life of the linings of the forging heating furnace and the cement kiln can be prolonged.

Description

technical field [0001] The invention relates to the technical field of refractory material manufacture, in particular to a forsterite refractory brick used as the inner lining of forging heating furnaces and cement kilns. Background technique [0002] Refractory bricks, referred to as firebricks for short, are refractory materials made of refractory clay or other refractory raw materials. At present, the commonly used refractory bricks are mostly made of soft clay and hard clay clinker, and the ingredients are prepared according to certain particle size and proportion requirements. After molding and drying, they are fired at a high temperature of 1300 ° C to 1400 ° C. Due to the low load softening temperature of the refractory brick, poor thermal stability, and shrinkage at high temperature, the thermal conductivity is high; the refractory brick is used as the lining material of forging heating furnace and cement kiln, and it is easy to shrink at high temperature and appear ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 冯娟张开亿王嘉龙
Owner LIUZHOU YITING TRADE
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