Gypsum is typically mined in an open pit quarry. The process used to mine gypsum is very similar to that used in many other rock quarries. First the exposed gypsum is fractured by drilling and blasting. The fractured gypsum is then loaded onto trucks and transported to a processing plant. At the processing plant, the large gypsum ore is reduced in size by passing it through a large crusher. Crushing the ore generates a mixture of smaller rocks that can be clean ... Read More

Astra Resources has signed a memorandum of understanding (MoU) for a joint venture development of a thermal coal exploration license in Nigeria.

Under the MoU, Astra Resources' subsidiary Muyiwa will acquire the majority ownership of African firm Barjalex Nig.

Barjalex Nig owns a coal exploration license covering the Manejo and Odele communities in the Ika District of Ankpa Local Government, in Kogi State.

The exploration l ... Read More

Primary crushing equipment jaw crusher, impact crusher, the European version of the back-breaking, cone crusher and other products.
Manganese ore more advanced processing equipment is hydraulic cone crusher and the European version of the crusher.

The application of manganese ore
Manganese has an important value in the national economy, widely used in metallurgy, chemical industry, light industry and defense industry and other sectors, especially in the metallurgical industry ... Read More

In silica quarry, it’s important to choose right crushing equipment and grinding equipment for silica pulverization. Usually this is the essential procedure before the silica being processed in the dressing.

Here we can provide you with silica crusher, such as jaw crusher for primary crushing, cone crusher and impact crusher for secondary crushing and tertiary crushing. Apart from silica crushing equipment, there are grinding machine for further grinding. If you need a complete ... Read More

The calcite has another name calcspar. Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate( CaCo3 ). It has a Mohs hardness of 3, a specific gravity of 2.71, and its luster is vitreous in crystallized varieties. Color is white or none, though shades of gray, red, yellow, green, blue, violet, brown, or even black can occur when the mineral is charged with impurities. Calcite is transparent to opaque and may occasionally show phosphorescence o ... Read More