Palygorskite ultrafine grinding mill

2017-04-28

Palygorskite or attapulgite is a magnesium aluminium phyllosilicate with formula (Mg,Al)2Si4O10(OH)·4(H2O) that occurs in a type of clay soil common to the Southeastern United States. It is one of the types of fuller's earth. Some smaller deposits of this mineral can be found in Mexico, where its use is tied to the manufacture of Maya blue in pre-Columbian times.

Attapulgite is used widely in medicine. Taken by mouth, it physically binds to acids and toxic substances in the stomach and digestive tract. Also, as an antidiarrheal, it was believed to work by adsorbing the bacteria or germ that may be causing the diarrhea. For this reason, it has been used in several antidiarrheal medications, including Diar-Aid, Diarrest, Diasorb, Diatabs, Diatrol, Donnagel, Kaopek, K-Pek, Parepectolin, and Rheaban. It has been used for decades to treat diarrhea.

Until 2003, Kaopectate marketed in the US also contained attapulgite. However, at that time, the U.S. Food and Drug Administration retroactively rejected medical studies showing its efficacy, calling them insufficient. Kaopectate's U.S. formula was changed to bismuth subsalicylate (pink bismuth). The next year (2004), an additional change in labelling was made; from then on, Kaopectate was no longer recommended for children under 12 years old. Nevertheless, Kaopectate with attapulgite is still available in Canada and elsewhere. Until the early 1990s, Kaopectate used the similar clay product kaolinite with pectin (hence the name).

Palygorskite can be added to lime mortar with metakaolin for period-correct restoration of mortar at cultural heritage sites.

Palygorskite is known to have been a key constituent of the pigment called Maya blue, which was used notably by the pre-Columbian Maya civilization of Mesoamerica on ceramics, sculptures, murals, and (most probably) Maya textiles. The clay mineral was also used by the Maya as a curative for certain illnesses, and evidence shows it was also added to pottery temper.

A Maya region source for palygorskite was unknown until the 1960s, when one was found at a cenote on the Yucatán Peninsula near the modern township of Sacalum, Yucatán. A second possible site was more recently (2005) identified, near Ticul, Yucatán.

The Maya blue synthetic pigment was also manufactured in other Mesoamerican regions and used by other Mesoamerican cultures, such as the Aztecs of central Mexico. The blue coloration seen on Maya and Aztec codices, and early colonial-era manuscripts and maps, is largely produced by the organic-inorganic mixture of añil leaves and palygorskite, with smaller amounts of other mineral additives. Human sacrificial victims in postclassic Mesoamerica were frequently daubed with this blue pigmentation.

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The ACM/A series are highly efficient super-fine punch-action mechanical micro grinding machines of performing the complete process of palygorskite grinding, separation and making of the finished product within the same tightly integrated system.

1. Built-in separation mechanism-preventing over-grinding.

2. Able to produce uniform granules of required sizes by adjusting the speed of the stage-separation wheel(s) or by adjusting the strength of the blower(s).

3. Powerful blowing and strong self-cooling capability, suitable for grinding heat-sensitive materials.

4. Different grinding accessories/devices are used according to the hardness of the material being ground; different types of materials (alloyed carbon steel, stainless steel, ceramics etc) are available for the Machine's inner linings and product extracting system, meeting the needs of different industries.

5. Both manual and programmable auto-controlled machines available.

The machine is suitable for super-fine grinding of various types of brittle materials. Material hardness (Mohs scale)<4, moisture contents<10%, input size 5-200mm (as decided by the model of the machine and material hardness). The machine is widely used coating materials and other industries.

1. Our design idea is market-oriented and its goal is to increase customers’ satisfaction. Design according to the customers’ special requires. Achieve the perfect combination of rational investment and lower cost.
2.  According to related national standard strictly, we guarantee stable and reliable product quality with superb technique and technology.
3.  Control the production and examination of the parts and the whole machine strictly.
4.  The period of quality guarantee of the equipment is one year, but the whole machine is maintained for whole life. If we receive complaint from customers, we will respond immediately. And if necessary, we will send someone to the field at once.
5.  When technical breakthrough and improvement happen, we will do the correction and upgrade for customers with cost price only if customers will.
6.  Supply the blueprint of the product line and equipment details for free.


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