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Basic properties of siliceous limestone

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Basic properties of siliceous limestone

Date of release:2018-07-05 Author:Source network Click:


Wollastonite is a triclinal system of fine plate-like crystals in which the aggregates are radial or fibrous. The color is white, sometimes with a light grey and red hue. The glass is glossy and the cleavage surface is pearl luster.

Hardness 4.5 ~ 5.5, density 2.75 ~ 3.10g/cm3. Completely soluble in strong hydrochloric acid. Generally, it is resistant to acid, alkali and chemical corrosion. Moisture absorption is less than 4%. Low oil absorption, low conductivity, good insulation. Wollastonite is a typical metamorphic mineral, mainly produced in the contact zone between acid rock and limestone, and is symbiotic with fushan stone and garnet. It is also found in deep metamorphic calcareous crystalline schist, volcanic ejecta and some alkaline rocks. Inorganic needle-like wollastonite is a kind of mineral, its characteristic non-toxic, resistance to chemical corrosion, thermal stability and the size stability is good, have a glass and pearly luster, low water absorption and oil absorption value, mechanical properties and electric properties, and has certain reinforcing effect.


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Wollastonite products, fiber long and easy separation, low iron content, high whiteness. The product is mainly used as reinforcing filler for polymer - based composite materials. Such as plastics, rubber, ceramics, coatings, building materials and other industries.


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