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A process for making acid-activated bleaching earth from a crude attapulgite clay. A crude is selected which is mildly acidic and contains at least about 90 attapulgite. The process involves treating such clay with low levels of activating acid which are mixed with the dried and ground clay, or spray dried from slurries containing the clay-acid mixture.
We claim 1. A method for producing bleaching earth which comprises selecting a naturally-occurring acidic attapulgite clay having a pH in the range of 5 to 7 and a pore volume in the range of 0.25-0.50 ccgm, mixing said clay with an acid solution in amount corresponding to an acid dosage in the range of 10 to 30, heating said mixture at a temperature in the range of
Attapulgite Powder Vertical Mill-South Africa Impact . The Attapulgite Powder Vertical Mill is a very common mineral processing equipment and is an indispensable equipment in mine production. The Attapulgite Powder Vertical Mill is a device with high energy consumption and material waste in all equipment. The Attapulgite Powder Vertical Mill .
high production 500mesh iron ore ball mill er mill. Beneficiation of Iron Ore and the treatment of magnetic iron taconites stage grinding and wet magnetic separation is standard also applies to iron ores of the nonmagnetic type which after a reducing roast are amenable to magnetic separation All such plants are large tonnage operations treating up to 50000 tons per day and
The motor of main equipment drives the main shaft and dial through reducer, ... Carborundum is very hard to pulverize for its high hardness, but the use is very extensive. ... YGM fine grinding machinery for carbonate of lime is suitable for processing various non-flammable and non-explosive mineral materials with Mohs hardness less than 9.3 ...
5. The method of claim 1 wherein said selected clay is a naturally-occurring mixture of the mineral attapulgite and bentonite. 6. The method of claim 5 wherein said selected clay contains from about 10 to 90 attapulgite. 7. The method of claim 5 wherein said selected clay contains about 20-60 attapulgite. 8.
The use of a laboratory pulverizer is a must before sending any soil or test sample for XRF, titration, ICP or other assay method you need to pulverize or fine grind a dry representative portion of the rock sample using what is commonly called in the laboratory language of sample preparation a laboratory pulverizer.
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