Activated clay principles, characteristics and production technology

Our senior activated clay products, select high-quality raw materials, the introduction of foreign advanced production technology and production process carefully. Products are white, pink or white powder or granular, non-toxic and tasteless, insoluble in water, easy to absorb moisture; with larger specific surface area and more active acid center, so the catalytic and adsorptive ability strong, so not only have better decolorization ability, at the same time, a high degree of activity, the low rate of oil, filtering speed, is the most ideal bleaching agent.

Use of  Activated Clay  widely, in animal and vegetable oil refining industry for the decolorization and purification; in the petroleum industry, used for petroleum resin, wax, paraffin oil, kerosene decolorization and purification; paper industry for paper dyes, dye, fill oil. As a fire extinguisher powder in forestry and water and soil conservation, binder hond elimination of oil in water; used as a catalyst and catalyst carrier in chemical industry, carrier insecticides, pesticides and fungicides, rubber and plastic filler, desiccant and filtering agent, adsorbent radioactive waste; in water purification and sewage treatment as absorbent and flocculant.

Activated Clay

Physical and chemical properties of activated clay:

Characteristics odorless, tasteless, non-toxic white or beige powder or granule. A scattered, greasy feeling.

The relative density of 2.3~2.5

Solubility: insoluble in water, organic solvent and all kinds of oils and fats. Almost completely soluble in hot caustic soda solution.

Odorless, tasteless, non-toxic white or beige powder or granule. A scattered, greasy feeling. Insoluble in water, organic solvent and all kinds of oils and fats. Almost completely soluble in hot caustic soda solution.

Method for producing active clay of the popular process all dry, semi wet, vapor phase method, through the comparison, the production process of the practical analysis found that need to be solved in current activated clay production process and the following three problems:

1, to deal with the problem of acid waste water, the lime dosage is too large;

Question 2, oil absorption rate, the decolouring capacity of heavy oil 2%-5%. The oil was decolorized with clay, inevitably entrained oil, entrainment is generally active clay content 20%-50%, thereby increasing the coke consumption and cost. At present, a few enterprises by leaching is separated from the active waste clay in oil, but after the separation of the oil from clay, color is black, not decolouring good color. Therefore, domestic oil bleaching departments hope oil absorption of activated clay small;

3, the original bentonite have certain selectivity, not all can be produced efficiently the decolouring rate greater than 90% for all the different types of bentonite, or some type of bentonite could produce ordinary the decolouring ratio ≥ 80-85% or semi efficient active clay. Activity index is still not up to H (high activity of activated clay) on the activity of requirements. So the range of its use are subject to some limitations;

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