Category Archives: Bleaching Earth

Various technical parameters of bleaching earth, nature, characteristics, uses and future development

Common minerals include feldspar, gypsum, calcite, quartz and the incomplete decomposition of volcano tuff material. General pink, white, yellowish, grayish green color. The appearance of colloidal, low hardness, immersed in water to swell, no plastic, low refractoriness. Often the tuff or volcano rock in sea water or groundwater, by weathering in alkaline medium (pH=7-8.5) environment of deposition. Because it has strong absorbency and water swelling, so use in petrochemical fields, such as used in petroleum, oil, sugar, wine making, paper making, textile and other industries as a purifying agent and bleaching agent.

This product can greatly reduce the oil industry, oil production costs, compared with similar products, the amount can be reduced by about 5%, the residual oil and the filtering speed, reduce the rate of filter cake, can completely replace the activated carbon. New decolorization products is a good performance, low price.

Bleaching Earth

Bleaching clay silicate clay mineral is a layered structure, lamellae, named for its first found in the French city of the popular name of montmorillonite, kaolin.

bleaching earth mineral is a kind of natural nano structure of inorganic macromolecular silicate polymer. The family has 11, the composition of (Na, Ca) 0.33 (Al, Mg) 2[Si4O10] (OH) 2? NH2O, consists of two layers of top silicon oxygen tetrahedron sheet connected with a layer of Aluminum Co edge connection (magnesium) oxygen (oxygen) in eight face plates containing type 2:1 water of crystallization structure, is one of the mineral clay minerals in the crystal structure of the variance, the experimental diffraction slow scan results show that natural nano materials.

And have unique physical and chemical properties due to its special structure characteristics, enjoy the “universal material” reputation.

Volatile: ≤ 4%

Moisture: ≤ 2%

Properties: white or light yellow powder. Light and soft, creamy feel. The main components of magnesium silicate and aluminosilicate. Has strong adsorption. Absorption of moisture in the air, very easy to grind into fine powder. Insoluble in water

Biochemical studies. Decoloring agent for refining oil and vegetable oils.

Product use:

Lubricating oil, oil refining chemical industry 1, the residual carbon in the lubricating oil in the value, ash, water soluble acid reduced extremely trace, to improve its durability and enhance its ability to resist corrosion.

2, the edible oil industry, for the removal of all kinds of pigment in the oil, and taste, and ion (K +); adsorption, aflatoxin and other harmful substances separation.

3, daily chemical industry, mainly for cattle, sheep to make soap and other products of decolorization.

Product features:

The ion exchanged montmorillonite and acid activated the interlayer (calcium, magnesium, potassium, sodium and so on) position by small diameter ion substitution and stripping, the crystal ends pore increases, larger specific surface area. At the same time, because the substitution of hydrogen ion on eight sides or tetrahedral polyvalent ions, resulting in more negative electricity. The acid treated montmorillonite activation becomes activated clay has strong adsorption ability.