Slate
Slates are or argillaceous origin of metamorphic rocks and can also be defined as a layered stone. Fossils may be sometimes preserved in slate but are invariably distorted. Folds are often apparent in the field. Too fine-grained are tough to distinguished with the naked eye.
Slates are dense and fine grained rock. The colour of slates are generally gray, red, brown and green ranging from dark to light. It is produced by the compression of clays, shale, and various other rocks developing a characteristic cleavage consisting sericite and quartz with biotite, chlorite, and hematite as principal accessories.
In other words slates are generally formed by low-grade regional metamorphism of pelithic sediments or fine-grained tuffs. It can be associated with other metamorphic sedimentary or volcanic rocks.
Chemical Properties of Slate
Chemically they are Multi-Mineral, metamorphic argilaceous rocks made of an aggregate of minerals and colloidal substances. Essentially mineral composition includes quartz, bentonite, chlorite, sericite & oxides of iron with occasional spots/knots of minerals like garnet, pyrite, andulasite, etc. It is fairly resistant to acids and staining.
Physical Properties of Slate
Physically these are Metamorphic-Argillaceous rocks, which has developed a well-marked splittable cleavages with or without developed recrystallization & spots/knots of minerals like garnet, pyrite, andulasite, etc. They are normally fine to medium grained, moderately hard & compact, less homogeneous with varying textures & shades. It has an ability to split into thin layers along the plane of cleavages due to flattened & elongated minerals along the plane of cleavage.
Uses of Slate
- Paving
- Stepping stone in garden
- Combined with other materials gives quality and attractiveness
- Square blocks for a break band in section of granite paving
- Decorative clocks and thermameters
- Picture frame, mirrors, coasters, trivets, switch plates, candle holders.
- Engraved and painted in jewellery like earrings and pins.
Ocurrances of Slate
Wales |
Corris, Gwynedd, Llangollen, Clwyd. Neath, Mid Glamorgan. Blaenau Ffestiniog, Gwynedd. Clynderfen, Dyfed |
India |
Khanyara slate quarries are situated 11 to 15 Km. North East of Dharamshala, Distt. Kangra (Himachal Pradesh). Chamba district Himachal Pradesh |
Slate crusher
Raw material is loaded at the blasting face into trucks for transportation to the crushing plant. In the crushing plant, slate is crushed into suitable size. The whole process is as follows: First, slate enter into jaw crusher for primary crushing, then into impact crusher for secondary crushing, final, the slate enter into the cone crusher for fine crushing, then through screening machine, the suitable slates is screened out, while the unsuitable slates return to the crushing plant for re-crushing. Through a series of crushers, the slate is reduced to a size less than 100 mm and stored until required.
Slate crusher manufacturer – SBM
SBM is a manufacturer of crushing plant, and can design and provide the complete crushing, such as slate crushing plant, slate crusher plant, ore crushing plant, rock crushing plant etc. In slate crushing plant, we will choose the suitable slate crushers and slate mills for your slate crushing and ginding, according to your requirements and character of slate minerals. Our slate crushing plant stands the test of time.
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