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Method for producing ceramic from granite waste

A granite waste and granite technology, which is applied in the production, application, and household appliances of ceramic materials, can solve the problem of high residual iron content, and achieve the effects of reducing the residual iron content, reducing the difficulty of crushing, and reducing the magnetic force

Inactive Publication Date: 2018-03-27
广西烽顺新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for producing ceramics by using granite waste, which can solve the problem of excessive iron residual content in the final product obtained in the existing granite waste recycling process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1 - the method of utilizing granite waste to produce ceramics

[0025] It includes the following steps:

[0026] A, dry-grinding the granite waste into diameters of 40mm medium stone granules, dry grinding the medium stone granules into 20mm small stone granules, dry grinding the small stone granules into 5mm sand grains;

[0027] B, adding water to the sand and grinding it into stone slurry, the solid particle gradation of the stone slurry is:

[0028] Diameter of 1mm ~ 1.5mm: 20%;

[0029] The diameter is 2mm ~ 3mm: 50%;

[0030] More than 3mm in diameter: ≤3%;

[0031] C. Preliminary magnetic separation of the slurry in a wet electromagnetic magnetic separator with a field strength of 15,000 gauss to remove 95.9% of iron and 70% of biotite and metal substances such as magnesium, silicon, titanium, and niobium in the powder and harmful impurities;

[0032] D. Dilute the slurry obtained through preliminary magnetic separation to a solid content of 30wt%...

Embodiment 2

[0037] Example 2 - Method for producing ceramics from granite waste

[0038] It includes the following steps:

[0039] A, dry-grinding the granite waste into diameters of 60mm medium stone granules, dry grinding the medium stone granules into 40mm small stone granules, dry grinding the small stone granules into 15mm sand grains;

[0040] B, adding water to the sand and grinding it into stone slurry, the solid particle gradation of the stone slurry is:

[0041] Diameter of 1mm ~ 1.5mm: 30%;

[0042] Diameter of 2mm ~ 3mm: 60%;

[0043] More than 3mm in diameter: ≤3%;

[0044] C. Preliminary magnetic separation of the slurry in a wet electromagnetic magnetic separator with a field strength of 16,000 gauss to remove 96% of iron and 90% of biotite and metal substances such as magnesium, silicon, titanium, and niobium in the powder and harmful impurities;

[0045] D. Dilute the slurry obtained through preliminary magnetic separation to a solid content of 25wt%, and then conduc...

Embodiment 3

[0050] Example 3 - Method for producing ceramics from granite waste

[0051] It includes the following steps:

[0052] A, dry-grinding the granite waste into diameters of 55mm medium stone granules, dry grinding the medium stone granules into 28mm small stone granules, dry grinding the small stone granules into 10mm sand grains;

[0053] B, adding water to the sand and grinding it into stone slurry, the solid particle gradation of the stone slurry is:

[0054] Diameter of 1mm ~ 1.5mm: 28%;

[0055] Diameter of 2mm ~ 3mm: 57%;

[0056] More than 3mm in diameter: ≤3%;

[0057] C. Preliminary magnetic separation of the slurry in a wet electromagnetic magnetic separator with a field strength of 15500 gauss to remove more than 95% of iron and 88% of biotite and magnesium, silicon, titanium, niobium and other metals in the powder Substances and harmful impurities;

[0058] D. Dilute the slurry obtained through preliminary magnetic separation to a solid content of 30wt%, and then ...

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Abstract

The invention discloses a method for producing ceramic from granite waste, and belongs to the technical field of granite waste recycling. The method comprises the following steps: performing graded breaking on granite waste, adding water and grinding into stone slurry of specific grain grading; performing primary magnetic separation on the stone slurry to remove 95% or more of iron and 70-90% of biotite as well as metal substances and harmful impurities such as magnesium, silicon, titanium and niobium in the stone slurry; diluting and performing further magnetic separation; mixing the stone slurry with feldspar, sand and clay, and performing ball milling to certain fineness, and then making into powder; finally, putting the powder into a grinding tool and pressing into a green body, and then firing. The method disclosed by the invention overcomes the problems that the potassium-sodium-aluminum powder produced from granite waste by the prior art contains excessive iron and cannot be used for producing ceramic, or even if the potassium-sodium-aluminum powder can be used for producing ceramic, the obtained ceramic product often has lower quality, and thus influences the popularizationand application of granite waste recycling.

Description

technical field [0001] The invention belongs to the technical field of recycling granite waste, and in particular relates to a method for producing ceramics by using granite waste. Background technique [0002] Granite slab is a high-quality building material, which is widely used in masonry and decoration of high-end and luxurious buildings and structures. With the development of modern architecture, the demand for granite slabs has increased rapidly, further driving the mining and processing of granite. However, a large amount of waste materials are produced during the processing of granite. The slurry contains a large amount of non-metallic minerals such as silicon, potassium feldspar, albite, alumina, etc., and is the top raw material for the production of ceramics. However, usually granite processing plants directly discharge the stone slurry as waste slurry, which not only pollutes the local environment, but also causes a serious waste of resources. [0003] Ceramics...

Claims

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Application Information

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IPC IPC(8): C04B33/132C04B33/13C04B33/10
CPCC04B33/10C04B33/13C04B33/1324C04B2235/3418C04B2235/3472C04B2235/3481C04B2235/5427C04B2235/5436C04B2235/602Y02P40/60
Inventor 余健龙
Owner 广西烽顺新材料有限公司
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