What are the parts of an electrical fire monitoring sys…

What are the parts of the electrical fire monitoring system and what are their respective roles? - Musician The electrical fire monitoring system developed and produced by Beijing Lebird Technology Co., Ltd. is mainly composed of the electrical fire internet cloud, the centralized monitoring part ...more

Safety and technical measures for prevention and contro…

Now on the roof of the mine, water, fire, gas, coal dust, mechanical and electrical transport management made the following regulations to prevent the occurrence of major disasters of mine, I make sure mine safety production: 1. The mine must prepare an annual disaster prevention and treatment plan ...more

Prevention and control measures for push-type roofing a…

According to the nature of the top plate, the push-type top-down type is divided into an impact push type top and a composite top push type top. a, impact push type roof. When the coal layer of roof separation, substantially by roof delamination fracture has hit the top of the slate stone seam, res ...more

Main measures for prevention and control of mine water …

The principle of preventing and controlling mine water damage is “prevention first, prevention and control combination”. Coal mine hydrogeological situation should be identified mines and mine, the preparation of long-term prevention of water damage water damage prevention plans and annu ...more

Comprehensive prevention measures for spontaneous combu…

1, forecast spontaneous combustion of coal layer (1) Since coal produces CO in the low-temperature oxidation stage, CO is a sensitive indicator for early exposure of fire. The CO sensor is installed in the coal mine working face returning air passage, the comprehensive coal mining road and other pl ...more

Grinding equipment selection principle

When the mill is used for the first stage of grinding, it is sometimes equipped with a spiral classifier. The grinding machine is equipped with a spiral classifier. After the semi-industry test, the empirical formula is used to calculate the selection of the self-grinding machine , the semi-autogeno ...more

Import tariffs on automobiles are reduced to force indu…

Premier Li Keqiang of the State Council made it clear in his "Government Work Report" in 2018 that it has actively expanded imports, completed the first China International Import Expo, and lowered the import tariffs on automobiles and some daily consumer goods. Earlier, at the Davos Wo ...more