Open pit mining involves many processes, including perforation, mining, transportation and dumping. The open-pit mining operations focus on the characteristics of these four production processes, focusing on eliminating or weakening safety hazards in order to take effective measures. Safety measures ......
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Abstract: Valves are indispensable for fluid control activities and play a key role in the control of all fluids. Modern science and technology is developing very rapidly. It has achieved great breakthroughs and development in different industries. Therefore, the demand for high-temperature valves h ......
With the continuous development of society, the city’s transportation resources are increasingly strained, and the progress of intelligent network-connected technologies covering communication and Internet of Things technology provides good conditions for the development of urban transporta ......
Before and after the Spring Festival each year is an extremely busy stage of the tire industry, the company annual meeting before the Spring Festival, dealers conference; years later, various promotions, orders will, road shows and other activities continue. The current April-May period shoul ......
In 2017, the cumulative sales of excavators in Zhejiang Province reached more than 4,500 units, ranking 13th among all provinces. So in Zhejiang, which excavators sell well? If you want to start an excavator, what models are worth recommending? Let's take a look at the most common choices in th ......
[Chinese instrument network meter patent] creative limit, instrumentation invention. Today, we introduce a national invention-issued patent - a smart meter with a filtering function. The patent was applied for by Tianjin Chenggang Technology Development Co., Ltd. and was authorized on March 13, 20 ......
The common failure of the jaw crusher in the work and its solution are listed in Table 2-4. Table 2-4 Common faults and solutions for jaw crusher Fault phenomenon the reason Elimination method 1. The broken plate is shaking and the sound is not normal. 2. Impact sound is generated in the thrus ......
On the evening of April 4, the Ministry of Industry and Information Technology formally issued the 306th "Road Motor Vehicle Manufacturing Enterprises and Products Bulletin" and the 3rd batch of 2018 "New Energy Vehicle Recommended Model List for Promotion and Application". In ......
Measures to prevent coal dust explosions, including dust control measures, explosion-proof measures and measures. (1) Dust-proof measures The role of dust prevention measures is to reduce the generation and flying of coal dust under the well. 1. Dustproof when drilling (1) Wet rock drilling. The ......
Before the gas emission, all the roadways through which the gas flows and the mining face and the diverticulum where the gas outlet is cut off by the exhaust gas flow must be cut off, the personnel must be evacuated, and a special person should be set to guard. Roof fall cave, Working Face corner, n ......