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Manufacture method of square bricks

A technology for square bricks and raw materials, applied in the field of building materials, can solve the problems of lack of economical, environmental protection and effective treatment methods, occupation of space, prominent environmental problems, etc., and achieve the effects of reducing environmental pollution, improving strength and reducing production costs.

Active Publication Date: 2017-12-15
PANZHIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing vanadium extraction tailings are piled up. So far, there is no economical, environmentally friendly and effective treatment method. A large amount of open-air storage takes up space. The environmental problems are serious and resource utilization is urgently needed.

Method used

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  • Manufacture method of square bricks

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0019] A kind of preparation method that the present invention is used for square brick comprises the following steps:

[0020] 1) Prepare the raw materials, and mix the raw materials uniformly through a mixer to obtain the first mixed material, wherein the raw materials are 58%-65% of vanadium extraction tailings, 1%-3% of aluminate cement, and 18% of clay. 22%, ferrosilicon ash 3%-10%, aluminum oxide powder 6%-10%, and fly ash 4%-8%; in order to make the raw materials fully stirred evenly, there are less lumps, and the vanadium tailings The water content is less than 2% of its weight, the water content of aluminate cement is less than 2% of its weight, the water content of clay is less than 2% of its weight, the water content of ferrosilicon ash is less than 2% of its weight, and the aluminum oxide powder contains The water content is less than 2% of its weight, and the water content of the aluminum oxide powder is less than 2% of its weight. If the moisture of the raw mater...

Embodiment 1

[0029] 1) Prepare the raw materials, and mix the raw materials uniformly through a mixer to obtain the first mixed material, wherein the raw materials are calculated as 58% of vanadium extraction tailings, 2% of aluminate cement, 18% of clay, 10% of ferrosilicon ash, Aluminum oxide powder 6% and fly ash 6%;

[0030] 2) adding water of 4% of the total weight of raw materials to the first mixture, stirring evenly to obtain the second mixture;

[0031] 3) Pour the second mixture into the mold, and form it by blowing to obtain the semi-finished square brick;

[0032] 4) Calcining the semi-finished square bricks at a high temperature between 900°C and 1200°C to obtain finished square bricks.

[0033] After testing, the compressive strength of the finished square brick is 52-60MPa, and the water absorption rate is 3-4%, which meets the use requirements of the square brick.

Embodiment 2

[0035] 1) Prepare the raw materials, and mix the raw materials uniformly through a mixer to obtain the first mixed material, wherein the raw materials are calculated as 60% of vanadium extraction tailings, 1% of aluminate cement, 22% of clay, 4% of ferrosilicon ash, Aluminum oxide powder 7% and fly ash 6%;

[0036] 2) Adding 6% water of the total weight of raw materials to the first mixture, stirring evenly to obtain the second mixture;

[0037] 3) Pour the second mixture into the mold, and form it by blowing to obtain the semi-finished square brick;

[0038] 4) Calcining the semi-finished square bricks at a high temperature between 900°C and 1200°C to obtain finished square bricks.

[0039] After testing, the compressive strength of the finished square brick is 53-57MPa, and the water absorption rate is 2-4%, which meets the use requirements of the square brick.

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Abstract

The invention relates to the technical field of building materials and particularly relates to a manufacture method of square bricks. The manufacture method comprises the following steps: 1) preparing raw materials, and uniformly mixing the raw materials to obtain a first material mixture, wherein the raw materials comprise the following components in percentage by mass: 58%-65% of vanadium extracting tailings, 1%-3% of aluminate cement, 18%-22% of clay, 3%-10% of ferrosilicon ash, 6%-10% of aluminium oxide powder and 4%-8% of coal ash; 2) adding a certain amount of water into the first material mixture, and uniformly mixing the mixture with the water to obtain a second material mixture; 3) pouring the second material mixture into a mold, and performing hitting forming to obtain square brick semi-products; and 4) calcining the square brick semi-products at a high temperature to obtain square brick products. The method can be used for manufacturing square bricks with low cost.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a preparation method for square bricks. Background technique [0002] Square brick is a kind of building material, and it is a new and ideal decorative material for paving squares, airports, stations and sidewalks, and its consumption is increasing. At present, the main materials of square bricks are mostly ceramics, clay, etc., and their manufacturing costs are relatively high. [0003] my country's iron and steel industry produces about 1.6 million tons of vanadium-extracting tailings every year, and it shows an increasing trend year by year. Panzhihua and Chenggang alone discharge more than 500,000 tons of vanadium-extracting tailings each year. Vanadium extraction tailings are mainly composed of pyroxene phase, brookite phase and hematite phase. Most of the existing vanadium extraction tailings are piled up. So far, there is no economical, environmentally friendl...

Claims

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Application Information

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IPC IPC(8): C04B33/138C04B33/13
CPCC04B33/13C04B33/138C04B2235/3217C04B2235/602C04B2235/656C04B2235/96Y02P40/60
Inventor 李亮
Owner PANZHIHUA UNIV
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