Acid-soaking acid heat activation for attapulgite clay
A technology of attapulgite clay and acid immersion, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of complex process flow and high production cost, and achieve the effects of simple process flow, reduced energy consumption, and reduced production cost
Inactive Publication Date: 2016-12-07
蒋华
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Problems solved by technology
[0008] The activated attapulgite produced by this method has a decolorization and adsorption capacity close to wet acid activation, and the decolorization power is generally 230-250. There are basically no three wastes in the production process, but the process of this method is complicated.
Acid heat activation equipment requires special materials of stainless steel, so the production cost is high
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 2
[0016] Soak 80-90 parts of hydrochloric acid solution with a concentration of 1-13% statically to a block size of 0.5-100CM 3 Attapulgite clay raw ore for 2-100 hours, drained and extruded, activated attapulgite at 280-350°C for 30-50 minutes, and crushed into 150-250 mesh with a decolorizing power of 245±5 activated attapulgite.
[0017] The attapulgite clay of the present invention is activated by acid soaking and acid heat, and its process flow is simple, which is basically the same as the dry heat activation process. However, because the mineral acid is added to the raw ore for soaking acid activation, the decolorization and adsorption capacity of the product is higher than that of the dry activation process. The decolorization and adsorption capacity of the product has been greatly improved, which is equivalent to the decolorization and adsorption capacity of products produced by wet acid activation and semi-dry acid heat activation. Compared with wet acid activation, the...
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Abstract
The invention relates to acid-soaking acid heat activation for attapulgite clay. A technological process is simple; and a technology of the acid-soaking acid heat activation disclosed by the invention is basically the same as a dry-method heat activation technology, but has the advantage that the decoloration capacity of products is high. The acid-soaking acid heat activation is characterized by comprising the following steps of statically soaking an attapulgite clay crude ore with 0.5-100CM+[3] blockness and small content of montmorillonite in an inorganic acid solution (a sulphuric acid solution, a hydrochloric acid solution and the like) of which the concentration is 1-15% for 2-100 hours, performing draining, performing extrusion to obtain sheets, performing activation at 280-350 DEG C with a general rotary drum drier for 30-50 minutes, and performing crushing so as to obtain 150-250-mesh active attapulgite of which the decoloration capacity is 245-255.
Description
technical field [0001] The invention relates to acid soaking and acid heat activation of attapulgite clay. Background technique [0002] Attapulgite clay has colloidal properties and decolorization and adsorption properties, and can be used for decolorization and purification of petrochemical, edible oil, alcohol, sugar and other products, as well as for detoxification, deodorization, environmental protection, protection, etc.; in petroleum, geothermal The application prospects of drilling, medicine, fertilizer, building materials, etc. are also broad. But the decolorization and adsorption performance of attapulgite clay raw ore is not very good. [0003] In order to improve the decolorization and adsorption performance of attapulgite clay, it is often necessary to activate the ore of attapulgite clay. At present, attapulgite clay activation technology at home and abroad can be roughly divided into three types: [0004] 1. Dry heat activation: This method is to activate t...
Claims
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IPC IPC(8): B01J20/12B01J20/30
Inventor 蒋华
Owner 蒋华