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Phosphogypsum baking-free brick and method for manufacturing same

A phosphogypsum, non-burning brick technology, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as high cost of additives, high cost, and inability to be used as load-bearing wall blocks

Inactive Publication Date: 2008-05-21
当阳市金砂新型建筑材料厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the raw material formula or production process, either the product quality is poor, or the cost is high, which is not economical.
The domestic building materials industry has done a lot of research and experiments, and has applied for many patents on domestic phosphogypsum waste slag bricks, but they all exist to varying degrees, either because the clay consumption is large, or the process is complicated, the drying time is long, the bricks are difficult to form, and it is difficult to burn them. It is easy to deform and crack, the cost of additives used is high, or the strength is generally below 7.5MPa, so it can only be used as enclosure wall blocks, not load-bearing wall blocks, and the application range is limited

Method used

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  • Phosphogypsum baking-free brick and method for manufacturing same

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A phosphogypsum unburned brick is a finished product formed by mixing cement, lime, phosphogypsum waste residue and aggregate in the following weight ratios: cement 1000kg, lime 200kg, phosphogypsum waste residue 3500kg and aggregate 3700kg.

Embodiment 2

[0035] A phosphogypsum unburned brick is a finished product made by mixing cement, lime, phosphogypsum waste residue and aggregate in the following weight ratios: cement 1000kg, lime 300kg, phosphogypsum waste residue 5000kg and aggregate 5300kg.

Embodiment 3

[0037] A phosphogypsum unburned brick is a finished product formed by mixing cement, lime, phosphogypsum waste residue and aggregate in the following weight ratios: cement 1000kg, lime 250kg, phosphogypsum waste residue 4250kg and aggregate 4500kg.

[0038] The preparation method of the above-mentioned embodiment is the same, including powdering, batching, mixing, ageing, high pressure forming, and curing procedures, and the production steps are as follows:

[0039] a. Crushing: crushing the aggregate into stone chips, the particle size of the stone chips is 1-5mm

[0040] b. Batching: the raw materials are batched according to the proportion of weight fraction;

[0041] c. Mixing: First, mix the phosphogypsum, stone chips and lime prepared in step b, and then add cement and water after 3-5 seconds to carry out comprehensive mixing.

[0042] d. Ageing: put the mixed clinker into the ageing warehouse for ageing for 2 hours;

[0043] e. High pressure forming: bricks made by fa...

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Abstract

The invention discloses a phosphogpysum burn-free brick which is made from the mixed components with the following weight ratio of 10 percent of cement, 2-3 percent of lime, 35-50 percent of phosphogypsum waste residue and 37-53 percent of aggregate. The invention discloses a preparation method of the phosphogpysum burn-free brick at the same time, including procedures of grinding, batching, mixing, aging, high pressure forming and maintaining. The invention facilitates the phosphogypsum waste residue to be comprehensively utilized, lowers the clay using amount at the same time, protects the land resources and is capable of improving the product strength obviously.

Description

technical field [0001] The invention relates to a phosphogypsum unburned brick, and the invention also relates to a manufacturing method of the phosphogypsum unburned brick. Background technique [0002] Because clay bricks consume a lot of non-renewable land resources, they are no longer in line with the national industrial policy. The building materials industry has sought other alternative raw materials, such as: sandstone, fly ash, carbide slag, foundry steel slag, etc. to produce building bricks. However, due to the raw material formula or production process, either the product quality is not good, or the cost is high, which is not economical. The domestic building materials industry has done a lot of research and experiments, and has applied for many patents for domestic phosphogypsum waste slag bricks, but they all exist to varying degrees, or the clay consumption is large, or the process is complicated, the drying time is long, the brick formation is difficult, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14
CPCC04B28/02Y02W30/91
Inventor 陈宗伍
Owner 当阳市金砂新型建筑材料厂