Silica Gel is a highly active adsorption material, usually with sodium silicate and sulfuric acid reaction, and after aging, acid bulbs and a series of post-processing in the system. Silica gel according to the size of the aperture is divided into: wide pore granular silica gel, coarse silica gel, Silica Gel Type B, Narrow Pore Granular Silica Gel . Because the different pore structure, adsorption properties so they have their own characteristics. Wide pore silica gel in the case of high relative humidity had a higher adsorption capacity, pore silica gel in the case of low relative humidity higher than coarse silica gel adsorption, and B-type silica pore structure between the coarse and fine hole between the amount of adsorption between the coarse pore between. Macroporous silica gel generally used as a catalyst carrier, matting agents, toothpaste abrasive. Should be selected according to different uses of different varieties.

 

Security Main ingredient is silica gel, chemically stable, will not burn. Silica gel is an amorphous silica, the dust content of the workshop should be controlled less than 10 mg / cubic meter, the need to enhance ventilation, wear a mask operation. Silicone has a strong adsorption capacity, human skin can produce drying effect, so, the operation should wear good clothes. If the silica gel into the eyes, which requires large amounts of water to wash and seek medical treatment. Blue silica gel because it contains a small amount of cobalt chloride, toxic, should avoid contact and inhalation of food and mouth, such as the occurrence of poisoning should immediately seek medical treatment. Silica gel in the course of the medium due to absorption of water vapor or other organic substances, the adsorption capacity decreased, can be reused after regeneration. First, after the regeneration of silica gel adsorbed water vapor Silica gel adsorption of water, it can be by way of thermal desorption to remove water, heat in different ways, such as the electric furnace, flue waste heat such as heating and hot air drying. Desorption heating temperature control is appropriate in the **** ℃, the blue gel indicator, color gel, DL-type blue silica gel is controlled at 100 - 120 ℃ appropriate. Regeneration of various industrial silicone maximum temperature should not exceed the following limits: Wide pore silica shall not exceed 600 ℃; Pore ​​silica shall not exceed 200 ℃; Blue plastic indicator agent (or color silica gel) shall not exceed 120 ℃; Alumina gel not be higher than 350 ℃. Regenerated silica gel, the water in the 2% general control can back into use.