Montmorillonite and the difference of bentonite and zeolite powder
Tell you a simple identification method:
First, high purity montmorillonite fineness of 300 mesh or more, the production cost is higher, general of bentonite and zeolite powder, generally only less than 100 mesh, such as low cost. So touched with the hand, can feel the ordinary of bentonite and zeolite powder, rough and high purity montmorillonite feel is exquisite, smooth.
Second, the montmorillonite has strong water imbibition, put his hand into it, the moisture on the skin can instantly absorbed, exposed to the air to handle, there will be obvious burning. And of bentonite and zeolite powder does not have this feature.
Through the above two points, the basic can be some inferior mildew remover, reduce our loss.
Bentonite is also called spot to take off the rock or bentonite, China is the common name GuanYinTu, main mineral composition is montmorillonite, content ranging from 60% to 90%, in a variety of color such as yellow, green, yellow, grey, white and so on. Can into dense clumps, can also be used for the loose soil, you have slippery feeling by hand grinding, small block after adding water swelling volume, are suspended in the water, the water when the paste. Some properties of bentonite are also determined by the montmorillonite. Bentonite name source is: in 1898, the United States geological scholars Knighl Wyoming in the United States near the Rocky Mountains and found a green water absorption swelling clay material, because the source is: "the Fort Beton", thus named bentonite (Betonite). And montmorillonite name is due to its original source named after the city of montmorillonite and found in France, montmorillonite (montmorillonite) and montmorillonite, is a kind of layered silicate clay structure, flaky crystal, kalama department has 11 types. We now commonly referred to as montmorillonite (28 sides Smectite) belongs to the Smectite subtribe, by the second top connection of the silicon oxygen tetrahedron slice of a common edge connection layer of aluminum, magnesium) oxygen (hydrogen) octahedral 2:1 type containing water of crystallization structure, in clay minerals is one of the strongest mineral crystal structure variation.
1 the current situation of bentonite
1.1 rich in resources
China bentonite ore resource in the world, forecasts the resources above 7 billion t. Body and surface montmorillonite, 38 sides smectite rarely, only the elm ditch in xinjiang have been reported, but no product.
From the point of such kinds of bentonite, calcium base bentonite, sodium base bentonite, in addition to hydrogen and aluminum, such as sodium calcium base bentonite. Due to the fast development in recent years, montmorillonite and points with and without square square stone quarries, heavy metal mine high and low heavy metal ore.
From the point of bentonite ore distribution, most of guangxi, the second is xinjiang, in liaoning, zhejiang, Inner Mongolia, hebei, shandong, hubei, anhui, etc.
At present, has formed industry are: the run of mine ore, the original mineral powder, iron ore pellets, drilling mud soil, the common casting soil, paper making, ceramics, cat litter, desiccant, activated clay, bentonite, organic montmorillonite feed such as 12 categories. In addition to organic bentonite, feed montmorillonite 2 kind of high added value, the other is cheap products, production of activated clay by pollution has been limited.
Sodium bentonite main processing is still the retrofit of common wheel mill and screw extruder mixed grinding, extrusion equipment. Powder is the most commonly used equipment Raymond mill, its specifications are 3 r, 4 r and 5 r, etc. In addition, in recent years, companies with several sets of purification of bentonite on the production line, investigate its production process, belong to the category of water of bentonite.
In recent years, our country did not change the high-grade imported ore exports cheap works, but in the development of high-grade products have already produced results, some imported products also gradually had a substitute, foreign users is positive and domestic manufacturer association, new industries have emerged, such as detergent, colorful coating, etc. The key is we want to make good use of our mineral resources, our mineral resources are scarce and precious, although undressed ore prices rising in recent years, mining costs, but are not profit growth, to end in the field of market value is very low in the face of the history, to develop or introduce more can do big project and formed several hundreds of millions or even billions of dollars in the industry. These are necessary, possible, also is not difficult.
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