January 24, 2022

Mine water damage prevention and response

(1) Water seepage symptoms 1. Water vapor phenomenon of surrounding rock: The rock ( coal ) layer be ...

Anchor drill

The development of bolt drilling rigs has gone through more than 30 years, and now ...

Purification of rare earth metals by molten salt extraction

Certain rare earth metal mixed molten salt in contact with a high temperature, changing the metal O ...

Mining work of the mining method in the staged rock drilling stage

After the cutting work is completed, the free surface can be blown according to the cutting vertica ...

Fluorite mining method

Fluorite minerals, like other minerals, generally use both open and pit mining methods. The shallow ...

Typical scheme for sublevel caving of bottomed columns with horizontal deep hole falling mine - cutting work

The cutting work with the sub-column sublevel caving method is mainly based on the bottoming of the ...

Application of Cloud Storage Technology in Security Monitoring System

The application of big data in the security industry makes security more intelligent. Big data tec ...

ZF, UBS and IBM jointly launch the first car payment transaction platform

ZF (ZF), UBS (UBS) and IBM will jointly release the payment transaction platform is based on ...

Pyrite ore dressing equipment

Flotation column is a kind of high-efficiency flotation equipment . Compared with trough flotation m ...

Researchers to prepare large-area high-efficiency perovskite solar cells

Xinhua News Agency, Shanghai, September 14 (Reporter Chou Yi) The reporter learned from Shanghai J ...

Po Chun 310 automatic transmission will be on the market, more than 50,000 yuan can easily have!

On September 22, Baojun 310 automatic transmission will be listed at the Qingdao Auto Show. It is ...

Mine underground blasting safety regulations

        (1) General provisions         1. When underground blasting may ca ...