A kind of method for preparing ceramic raw material by sawing mudstone powder from granite stone

A technology for ceramic raw materials and sawing mud stone powder, which is applied in the direction of solid separation, etc., can solve the problems of high TFe content and low yield of ceramic products, and achieves the effects of reducing production cost, improving yield and short process.

Active Publication Date: 2021-05-14
ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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Problems solved by technology

[0005] CN109453892A discloses a method for efficiently utilizing tin and iron-containing stone material sawing mud, although it includes screening, desliming and magnetic separation of fine particle materials, but there are problems such as low yield of ceramic products and high TFe content

Method used

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  • A kind of method for preparing ceramic raw material by sawing mudstone powder from granite stone
  • A kind of method for preparing ceramic raw material by sawing mudstone powder from granite stone
  • A kind of method for preparing ceramic raw material by sawing mudstone powder from granite stone

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Effect test

Embodiment 1

[0031] Taking the solid waste sawing mud of sesame white granite in a certain place in Henan Province as the test object, the test product was tested by Foshan Ceramic Research Institute Testing Co., Ltd. 2 0: 3.18-4.06%, Na 2 0: 5.26-6.06%, Fe 2 0 3 : 2.15-2.83%, Al 2 o 3 : 16.26-18.38%, SiO 2 : 65.77-72.60%, TiO 2 : 0.12-0.44%, CaO: 2.07-2.77%, MgO: 0.09-0.65%, product particle size -0.031mm (500 mesh) > 48%, raw ore 1200 °C firing whiteness is 6.5-8.6%, the preparation of ceramic raw materials Process flow chart such as figure 2 shown.

[0032] (1) Slag separation: First, add water to the granite stone sawing mud and stone powder to make granite stone sawing mud, and then pass through the slag separation sieve to remove coarse impurities in the granite stone sawing mud to obtain primary ore pulp; coarse impurities mainly include stone solid waste processing , Large-grained waste rocks, foreign matter, vegetation and other impurities introduced during storage and tran...

Embodiment 2

[0037] This embodiment is basically the same as Embodiment 1, the difference is: as image 3 As shown, the graded pulp enters the pump pool of the slurry pump, and is sent to the cyclone by the slurry pump for desliming treatment, and then the magnetic separation and impurity removal in step (3) are performed.

[0038] Taking granite solid waste sawing sludge in a certain place in Henan Province as the test object, the test product was tested by Foshan Ceramic Research Institute Testing Co., Ltd. 2 0: 3.84%, Na 2 0: 4.69%, Fe 2 0 3 : 1.54%, Al 2 o 3 : 13.84%, SiO 2 : 75.47%, TiO 2 : 0.071%, CaO: 1.4%, MgO: 0.18%, the whiteness of raw ore fired at 1200°C is 6.8%, the process flow chart for preparing ceramic raw materials is as follows figure 2 shown.

[0039] (1) Slag separation: First, add water to the granite stone sawing mud and stone powder to make granite stone sawing mud, and then pass through the slag separation sieve to remove coarse impurities in the granite s...

Embodiment 3

[0044] This embodiment is basically the same as embodiment one or two, the difference is: as Figure 4 As shown, in step (3), the equipment used for the three-stage magnetic separation and impurity removal of the classified pulp is used. The first stage magnetic separation adopts a plate permanent magnet magnetic separator with a field strength of 8000Gs, which mainly separates and removes mechanical iron and strong magnetic minerals. The second-stage magnetic separation adopts a high-gradient vertical ring magnetic separator with a field strength of 12000Gs, and the medium box adopts a network medium. The third-stage magnetic separation adopts a high-gradient vertical-ring strong magnetic separator with a field strength of 15000Gs. The non-magnetic material obtained last is a product; the magnetic material obtained after the three-stage magnetic separation is combined with the coarse sand obtained in step (2) and used as a building material dosage. Process flow chart such as ...

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Abstract

The invention proposes a method for preparing ceramic raw materials by sawing mudstone powder from granite stone. The method of the invention includes slag separation, classification and three-stage magnetic separation for impurity removal. The three-stage magnetic separation for impurity removal includes high-field magnetic separation and two-stage high Gradient strong magnetic separation, non-magnetic materials obtained after three-stage magnetic separation can be directly dehydrated and sold as products. This invention uses non-polluting and environmentally friendly physical technology to realize the removal of impurities and whitening of granite sawn mud and stone powder, which is used to prepare ceramic raw materials. This process is similar to Compared with the traditional process, the process is shorter, the raw materials do not need to be ground, the direct production cost is reduced by 40%, and the whiteness reaches 60-68%. At the same time, it realizes large-scale consumption, harmless treatment and resource utilization of solid waste from granite sawing mud, which fundamentally solves the industrial common problems of stone sawing mud polluting the environment and wasting resources. The problem of material supply in the ceramic industry has been solved.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of solid waste, in particular to a method for preparing ceramic raw materials by sawing mudstone powder from granite stone. Background technique [0002] Granite is a kind of plutonic acidic igneous rock mainly composed of quartz, feldspar and mica. Granite rock mass accounts for about 9% of the land area of ​​my country, reaching more than 800,000 square kilometers. China has proven 297 granite mines, and more than 20 granite stone industry clusters have been formed, with an annual output of about 300 million square meters of granite slabs. Saw mud is a mixture of stone powder and water produced in the process of granite stone mining, block cutting, and plate processing, accounting for 5-7% of the total stone mining blocks, and the annual increment of saw mud solid waste is about 30 million tons. Saw mud powder has fine particles, -400 mesh size accounts for 56%-65%, compact te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B9/00
CPCB03B9/00
Inventor 彭团儿刘广学邵伟学王洪亮刘磊
Owner ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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