Some locations are already being exploited, namely in Tasikmalaya, Leuwiliang, Nanggulan, and others. Indications Na-bentonite sediment contained in Pangkalan Brandan; Sorolangun-Bangko; Boyolali.
In this discussion as an example of Bentonite mineral is in the Village and the Village Habalanjati Wonosari District Besitang Langkat district of North Sumatra province. Megaskopis based observations, the average thickness of the outcrop is covered with a 15 meter thick overburden 2 m to 3 m.
Evalusai usability and quality bentonite
Use of bentonite in a variety of industrial purposes must meet the following requirements:
1. For the drilling mud in the mining and petroleum industries,
According to the America Petroleum Institute (API)
- Viscosity of a solution of 10 grams in 350 ml of water is 8 Cp.
- Lost in filtering through paper coatings to a solution of 10 grams in 350 ml was <14 ml.
- Accommodated by the rest of the 200 # (mesh) was <2.5%.
- Content of water vapor (humidity) is <12%.
- Viscosity in a solution of 6.5 grams of bentonite in 100 ml of liquid foundation is> 15 Cp.
- Lost in filtering through paper coating (filter) to a solution of 7.5 grams in 100 ml adalaaah <15 ml
- Moisture content is <15%.
- The rest of the 200 # (mesh) on wet screening was <2.5%.
- Separated from the 100 # (mesh) in dry filtration is> 98%.
2. For Making Animal Feed Supplement (Urea Molasses Block).
- The content of the bentonite is <30%.
- Bentonite grain size is 200 # (mesh).
- Have a water absorption in the bentonite was> 60%.
- Mantmorilonit have a mineral in bentonite is 70%.
- For the Cosmetic Industry.
- Silicate mineral containing magnesium (Ca-Bentonite).
- Has a neutral pH of 7.
- Water content in the bentonite <5%.
- No heat changes during and after heating.
- Bentonite grain size is 325 # (mesh).
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