Method for producing sintered bricks, blocks or ceramic products by using crystalline silicon cutting waste mortar

A technology for crystal silicon cutting and ceramic products, which is applied in the field of blocks or ceramic products, and the production of sintered bricks. It can solve the problems of low purity of recycled products, high production costs, and complicated processes, so as to reduce dry cracking, reduce bulk density, and improve heat preservation. The effect of thermal insulation performance

Inactive Publication Date: 2020-12-15
CHANGZHOU GUICHENG BUILDING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common problems of these methods are: low purity of recovered products, complex process, huge investment, high production cost, and the production methods of using acid, alkali, distillation, etc. will produce serious secondary pollution
[0006] At present, there is no report on the technical scheme of using crystalline silicon cutting waste mortar to prepare sintered bricks, blocks, and ceramic products.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for producing sintered bricks, building blocks or ceramic products by using crystalline silicon cutting waste mortar, comprising the following steps:

[0033](1) The weight ratio of raw materials is: 30% of engineering slag, 25% of mine slag, 20% of shale, 13% of coal gangue and 12% of crystal silicon cutting waste mortar. The ingredients are weighed according to the above weight ratio. The crusher is crushed, and all the raw materials are stirred and mixed evenly to obtain a mixture, so that the water content of the mixture is controlled at 14wt%;

[0034] (2) The mixed material is sent to the homogenization warehouse through the stacker for aging. After aging for 5 days, the plasticity index of the aged billet is 8.0, the drying shrinkage rate is 4.8%, and the drying sensitivity coefficient is 1.2;

[0035] (3) The aged blank is sent to the extruder forming machine through the reclaimer, and the pressure of the extruder is controlled to 5MPa;

[0036] (4) Th...

Embodiment 2

[0039] A method for producing sintered bricks, building blocks or ceramic products by using crystalline silicon cutting waste mortar, comprising the following steps:

[0040] (1) The weight ratio of raw materials is: 35% of engineering slag, 27% of mine slag, 10% of shale, 10% of coal gangue, 10% of coal cinder and 8% of crystal silicon cutting waste mortar. Quantitative batching, crushed by a crusher, all raw materials are stirred and mixed evenly to obtain a mixture, and the water content of the mixture is controlled at 13wt%;

[0041] (2) The mixed material is sent to the homogenization warehouse through the stacker for aging. After aging for 3 days, the plasticity index of the aged billet is 8.0, the drying shrinkage rate is 4.9%, and the drying sensitivity coefficient is 1.1;

[0042] (3) The aged blank is sent to the extruder molding machine through the reclaimer, and the pressure of the extruder is controlled to 7MPa;

[0043] (4) The formed green body is pushed into t...

Embodiment 3

[0046] A method for producing sintered bricks, building blocks or ceramic products by using crystalline silicon cutting waste mortar, comprising the following steps:

[0047] (1) The weight ratio of raw materials is: 30% of engineering dregs, 20% of mine dregs, 10% of shale, 20% of coal gangue, 3% of wood chips and 17% of crystal silicon cutting waste mortar. Quantitative batching, crushed by a crusher, all raw materials are stirred and mixed evenly to obtain a mixture, and the water content of the mixture is controlled at 13.5wt%;

[0048] (2) The mixed material is sent to the homogenization warehouse through the stacker for aging. After aging for 7 days, the plasticity index of the aged billet is 10.6, the drying shrinkage rate is 5.20%, and the drying sensitivity coefficient is 1.12;

[0049] (3) The aged billet is fed into the extruder forming machine through the reclaimer, the pressure of the extruder is controlled at 6MPa, and extruded to form a hollow block body with a ...

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Abstract

The invention discloses a method for producing a sintered brick, a building block or a ceramic product by using crystal silicon cutting waste mortar. The method comprises the following steps: weighing construction waste residue, mine waste residue, shale, gangue, coal slag, construction garbage, wood chip and the crystal silicon cutting waste mortar according to the weight ratio, fragmenting the materials by a crusher, stirring the raw materials and uniformly mixing the raw materials to obtain a mixture; sending the mixture to a homogenization silo by a stocker for aging; sending an aged blank material into an extruder forming machine by a material taking machine; pushing the molded base substrate in a drying kiln for drying; placing the dried base substrate into a tunnel furnace for roasting, and cooling the material to obtain the fired brick, the building block or the ceramic product. The crystal silicon cutting waste mortar is used for producing the fired brick, the building block or the ceramic product, the adhesion stress and the plasticising effect of PEG in the blank material can be fully performed, the drying sensitivity of the blank material is improved, and the method provides a cheap solution scheme for using the barren waste raw materials such as construction waste residue, construction garbage, coal slag and shale.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a method for producing sintered bricks, blocks or ceramic products by using crystalline silicon cutting waste mortar. Background technique [0002] In recent years, my country has made great progress in the research and development of solar energy, which has also promoted the rapid development of monocrystalline silicon and polycrystalline silicon industries, which are the main raw materials of solar energy. Crystalline silicon must be sliced ​​before it can be used in the photovoltaic industry, which requires the use of a large amount of polysilicon cutting fluid, which will gradually fail after repeated use in the cutting machine several times. At present, the polysilicon fluid used at home and abroad is mainly water-based cutting fluid, and its main components include polyethylene glycol (PEG) and silicon carbide (SC). The rapid development of the photovoltaic industry has r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/132C04B33/32
CPCC04B33/132C04B33/1324C04B33/32C04B2235/428C04B2235/77C04B2235/96Y02P40/60
Inventor 林敬涛林家铭鞠宇飞侯林燕孙媛媛肖雪军林春旺
Owner CHANGZHOU GUICHENG BUILDING MATERIALS CO LTD
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