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Method for preparing active floridin through microwave activation

A technology of activated clay and microwave activation, applied in chemical instruments and methods, inorganic chemistry, silicon compounds, etc., can solve the problems of excessive washing water, large amount of sulfuric acid, and long activation reaction time, so as to increase retention and improve activation effect , the effect of easy automation

Inactive Publication Date: 2009-11-18
苏州中材非金属矿工业设计研究院有限公司
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Problems solved by technology

[0005] The object of the present invention is to provide a method for preparing activated clay by microwave activation, and the purpose is to solve the p

Method used

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  • Method for preparing active floridin through microwave activation
  • Method for preparing active floridin through microwave activation

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Embodiment

[0021] Embodiment: a kind of microwave activation prepares the method for active clay, is made up of following steps successively:

[0022] The process is attached figure 2 Shown:

[0023] The first step: use calcium-based bentonite raw ore from Anhui Province to prepare activated clay. The raw calcium-based bentonite ore is crushed by a 300×150 pair of roller crushers. After crushing, the particle size of the material is ≤5mm to obtain bentonite raw materials;

[0024] The second step: the bentonite raw material obtained in the first step is added to the screw mixer through a quantitative feeder, and the bentonite raw material and industrial sulfuric acid are mixed evenly through the strong stirring of the screw mixer to obtain a bentonite slurry. The bentonite raw material in the slurry is The mass concentration accounting for the whole slurry is 65%, and the consumption of the sulfuric acid is: 150 kilograms of sulfuric acid is used for every ton of bentonite raw material...

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Abstract

The invention relates to a method for preparing active floridin through microwave activation, which comprises the following steps: crushing bentonite green ore into particles of which the diameter is less than or equal to 5 millimeters to obtain a bentonite raw material, and then mixing the bentonite raw material with sulfuric acid and water sufficiently and evenly to obtain bentonite slurry, wherein the bentonite raw material in the slurry accounts for 40 to 90 percent of the overall mass concentration of the slurry, and the dosage of the sulfuric acid is 50 to 250 kilograms in each ton of the bentonite raw material; performing microwave radiation treatment to obtain the bentonite slurry, and performing activating reaction on the bentonite to obtain an active floridin mixture; evenly mixing the obtained active floridin mixture with water and then filtering the mixture by a vacuum filter to obtain an active floridin filter cake; and washing the obtained active floridin filter cake with water, performing pressure filtration and dehydration, and drying the active floridin filter cake by a powerful crushing dryer to obtain the active floridin. The method can achieve continuous production operations and closed processing, thereby improving the technical level of bentonite deep processing and ensuring stable quality and excellent performance of the products in productive practices.

Description

technical field [0001] The invention relates to a method for preparing activated clay by microwave activation, and belongs to the technical field of clay mineral deep processing. Background technique [0002] Bentonite is a clay mineral mainly composed of montmorillonite, which is cheap and abundant in reserves. Bentonite minerals have a series of properties such as good expansion, dispersion, suspension, adsorption, plasticity, high ion exchange capacity and dry bond strength, high shear and high compressive strength, and good impermeability. , has been widely used in many industrial sectors. [0003] Activated clay is a chemical product prepared from bentonite as raw material through acid heat activation treatment, also known as bleaching clay. The preparation principle of activated clay is to use hydrogen ions with smaller ionic radius in inorganic acid to replace metal cations and water molecules with larger ionic radius, and the metal cations and water molecules are a...

Claims

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Application Information

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IPC IPC(8): C01B33/40B01J20/30B01J20/12
Inventor 雷东升王学群
Owner 苏州中材非金属矿工业设计研究院有限公司
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