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Coal slag

A cinder, weight percentage technology, applied in the field of building materials, can solve the problems of low flexural strength of sintered brick products, low cinder recycling rate, low whiteness of sintered brick products, etc., to achieve complete metal removal, improve ball milling efficiency, Good fluidity effect

Active Publication Date: 2015-04-22
KEDA INDUSTRIAL GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the preparation process of the above-mentioned fired bricks, the clay was first pretreated with a fungicide, but the cinder was not pretreated, resulting in: 1. The whiteness of the fired brick product was low; 2. The flexural strength of the fired brick product was low, The average value is ≧2.26 Mpa, and the minimum value of a single block is ≧1.28Mpa; 3. The process of mixing clay, sludge and cinder consumes a lot of electricity and costs a lot
In addition, the amount of cinder used is less, only accounting for 5-10 parts by weight, and the recycling rate of cinder is not high

Method used

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  • Coal slag
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Pass 130g of cinder raw material through 8 mesh sieve; 107g of <8 mesh cinder enters the magnetic separation equipment for iron recovery, 23g ≧8 mesh cinder is crushed by the crusher, and then enters the magnetic separation equipment for iron recovery, the recovered iron is 30g ; 100g of magnetically separated coal slag is added with 50g of water, after ball milling, the first mixture with a specific gravity of 1.0, a water content of 25%, and a flow rate of 10s is obtained; the first mixture of 150g is first added with 80g of water, and then removed by The iron equipment recovers iron powder, and obtains a second mixture with a specific gravity of 1.0, a moisture content of 25%, and a flow rate of 8s. The recovered iron powder is 5g; the second mixture after 225g of iron removal is added to 1g of soda ash and 1g The mixture of sulphur powder is settled and bleached through a settling tank, overflowing 48g of water; 179g of settled coal slag is filtered through a filter p...

Embodiment 2

[0073] Pass 130g of cinder raw material through 8 mesh sieve; 107g of <8 mesh cinder enters the magnetic separation equipment for iron recovery, 23g ≧8 mesh cinder is crushed by the crusher, and then enters the magnetic separation equipment for iron recovery, the recovered iron is 30g ; 100g of magnetically separated coal slag is added with 50g of water, after ball milling, the first mixture with a specific gravity of 1.2, a water content of 30%, and a flow rate of 12s is obtained; the first mixture of 150g is first added with 80g of water, and then removed by The iron equipment recovers iron powder, and obtains a second mixture material with a specific gravity of 1.2, a water content of 30%, and a flow rate of 10s. The recovered iron powder is 5g; the second mixture material after 225g iron removal is added to 3g sulfuric acid, The concentration of sulfuric acid is 20%. Settlement and bleaching treatment are carried out through the settling tank, and 48g water overflows; 180g o...

Embodiment 3

[0075] Pass 130g of cinder raw material through 8 mesh sieve; 107g of <8 mesh cinder enters the magnetic separation equipment for iron recovery, 23g ≧8 mesh cinder is crushed by the crusher, and then enters the magnetic separation equipment for iron recovery, the recovered iron is 30g ; 100g of magnetically separated coal slag is added with 50g of water and 10g of raw talc, and after ball milling, a first mixture with a specific gravity of 1.5, a water content of 35% and a flow rate of 15s is obtained; 160g of the first mixture is first added with 80g of water , And then recover the iron powder through the iron removal equipment to obtain a second mixture with a specific gravity of 1.5, a moisture content of 40%, and a flow rate of 12s. The recovered iron powder is 5g; add 235g of the second mixture after iron removal The mixture of 1g of soda ash and 2g of soda ash is settled and bleached through a settling tank, and 48g of water overflows; 190g of settled coal slag is filtered...

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Abstract

The invention discloses coal slag which consists of the following components: 50-65% of SiO2, 17-24% of Al2O3, 5-7% of CaO, 0.01-0.5% of Fe2O3, 0.01-3.5% of SO3, 1-3% of K2O, 0.01-0.4% of TiO2, 0.5-4.0% of MgO, 0.5-3.5% of Na2O, 0.3-1% of P2O5, 0.1-0.3% of BaO, 0.1-0.3% of F, 0.1-0.05% of V2O5, 0.1-0.3% of MnO, 0.01-0.3% of SrO, 0.01-0.05% of Cr2O3, 0.01-0.1% of ZrO2, 0.01-0.05% of NiO, 0.01-0.03% of CuO, 0.01-0.03% of ZnO, 0.01-0.03% of As2O3 and 0.05-0.01% of Rb2O. When the coal slag is used as a raw material of a porcelain tile, the use amount can be 60-70%, and the manufactured porcelain tile is high in whiteness and fracture resistance.

Description

Technical field [0001] The invention relates to the technical field of building materials, in particular to a special cinder for making porcelain bricks. Background technique [0002] my country’s construction industry has a huge demand for porcelain tiles. Most of the conventional porcelain tiles require barren sand materials, which are all obtained from the mountains. They need to remove the epidermal vegetation and the viscous loess on the mountain surface. The impact is huge, destroying national forests and causing soil erosion. [0003] On the other hand, the output of industrial coal slag is very large. Although there are some environmentally friendly reuse methods, such as adding processing cement, making municipal bricks, etc., the amount of addition is small and the amount of use is small, which is far from being able to digest the amount of cinder produced every day , And the added value of the product is low. [0004] At present, cinder is also used as a raw material for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/135C04B35/00B09B3/00
CPCY02P40/60
Inventor 林智武桢邵俊杰
Owner KEDA INDUSTRIAL GROUP CO LTD