Is it difficult for excavators to work in SHANKUANG mine
the site must be observed before the operation. The mine is located in the high altitude area, with many ramps and sharp bends, so the requirements for the operator are relatively high. In addition, the roads of small private mines are relatively narrow, and there are no stone lined roads. They are all dirt roads, so they can't walk in the rainy season. The picture above is the scene of the open-pit mine project. Special attention should be paid to safety when driving excavators here
2. There are many hidden dangers of excavators responsible for stripping operation
for excavators responsible for stripping operation in mines, they often work on the top of the mountain, which has a high risk index. The mining team and the slag transportation team should try not to be in the same line, otherwise it will be troublesome to roll down the stone. In addition, the excavator responsible for stripping ring mining should not be too many, otherwise the hidden danger is too big
3. Rock excavation in the mine does great harm to the bucket
excavator working in the mine is different from other places, such as digging hard rock in the mine, which does great harm to the bucket. The operators should operate the bucket correctly, adjust the position of the excavator according to the direction of the rock crack, so that the bucket can shovel in smoothly. The force should not be too strong when digging, and the tooth root is easy to break
4. Always obey the command of the safety officer
the safety officer in the mine is also essential. Mining and stripping need at least two safety officers to cooperate, and need to be equipped with whistles and walkie talkies, because the excavator driver can't observe the situation of the rear slope and the surrounding at any time, and the safety officer needs to observe at the highest point. If no one commands, it is dangerous for the rock to fall, This is also one of the hidden dangers of mine safety
5. At the same time of mining, slope repair should be carried out along the way.
open pit mining has the characteristics of heavy workload and many potential safety hazards. Excavator in mining at the same time, but also by the way to repair the slope, because some slope you first repair is not good, to the back to repair it is very difficult. The purpose of repairing the slope is to rece the occurrence of rolling stones and landslides, which requires higher requirements for the manipulator
6. Don't listen to the sound when loading the truck.
when the excavator is working on the slope, you need to pay more attention all the time. Don't turn on the sound in the car or listen to the music. Under the vibration of the excavator in large mines, the loose mud and stones above may be shaken down. If you play it too loud, you can't hear the commander's command or other problems
7. Pay attention to the falling stones after blasting operation
blasting operation is often carried out in mines. Special attention should be paid to safety after blasting, and all-round inspection should be carried out in advance to see if there are loose stones that are about to fall or empty joints caused by blasting. The operator should pay attention to safety, and excavate and mp before entering the working area.
Shenyang Hongmei Enterprise Group Co., Ltd. is located in Shenyang, an important instrial town in Northeast China. It is the largest seasoning proction enterprise in Northeast China, the leading enterprise of monosodium glutamate proction in China, the chairman of monosodium glutamate branch of China Fermentation Instry Association, the chairman of amino acid technical committee, the member of National monosodium glutamate Standardization Committee and the drafting unit of monosodium glutamate standard
under the influence of many factors, Shenyang Hongmei group has been unable to bear the heavy burden for more than ten years. It applied to the court for bankruptcy on April 27, 2012 and was ruled bankrupt by the court on May 28, 2014
Hongmei enterprise was founded in 1939 and restructured in 1998 to form Hongmei enterprise group, which has 70 years of fermentation instrial proction history. The group includes Shenyang Hongmei monosodium glutamate Co., Ltd., Shenyang Hongmei Biotechnology Co., Ltd., Shenyang Hongmei condiment Co., Ltd. and Shenyang Hongmei Trading Co., Ltd, It is a large state-owned enterprise group supported by Liaoning Province and Shenyang municipal government Hongmei monosodium glutamate used to be a famous brand proct in Shenyang. Many years ago, it was an excellent gift for Shenyang people to give to their relatives and friends, but it has graally been "marginalized". In recent years, monosodium glutamate has become "backward proction capacity", which is limited by national policies, and is also an important reason for the decline of Hongmei groupsource of reference: Internet - Shenyang Hongmei Enterprise Group Co., Ltd.
claprott once analyzed the green jade from Peru, but he failed to find beryllium. Bergman also analyzed the green jade and concluded that it was a silicate of aluminum and calcium. At the end of the 18th century, at the request of the French mineralogist ayuyi, the chemist walkland carried out the chemical analysis of chlorite and beryl. Walkland found that the chemical composition of the two are exactly the same, and found that they contain a new element, called gluconium. This term comes from the Greek glykys, which means sweet, because beryllium salts have a sweet taste. On February 15, 1798, walkland read out his paper on the discovery of new elements at the French Academy of Sciences. Because the salt of yttrium also has a sweet taste, later Weiler named it beryllium, which comes from beryl, the main ore of beryllium[ 2]
toxicity: beryllium compounds such as beryllium oxide, beryllium fluoride, beryllium chloride, beryllium sulfide and beryllium nitrate are more toxic than beryllium metal. Beryllium is a systemic poison. The toxicity of beryllium depends on the entry route, the physical and chemical properties of different beryllium compounds and the species of experimental animals. Generally speaking, the toxicity of soluble beryllium is higher than that of insoluble beryllium; The toxicity of intravenous injection was the highest, followed by respiratory tract, oral and percutaneous toxicity was the lowest. After beryllium enters the human body, the insoluble beryllium oxide is mainly stored in the lungs, which can cause pneumonia. Soluble beryllium compounds are mainly stored in bone, liver, kidney and lymph nodes. They can interact with plasma proteins to form protein complexes, causing organ or tissue lesions and causing cancer. Beryllium is excreted very slowly from human tissues. Therefore, special care should be taken when contacting beryllium and its compounds[ 4]
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