Open-pit mining refers to the use of certain mining equipment to engage in mining operations in open spaces. According to the different mining tools and mining equipment used in open pit mining, open pit mining is divided into manual mining, mechanical mining, hydraulic mining and excavation mining. The sum of pits, steps and open channels formed by open pit mining is called a mining site.
The production process of open pit mining includes piercing and working face perforation, charge blasting, loading and transportation, ore transportation to the crushing field or dressing site, rock and soil transportation to the waste rock field. In open-pit mining, it is usually divided into horizontal stratification of a certain thickness, mining from top to bottom and maintaining a certain advanced relationship. During the mining process, each work level is spatially stepped, and each step is a step or stage. Steps are one of the basic components of an open pit and are the unit of independent stripping and mining operations.
The naming of the steps is generally expressed in terms of the elevation of the flat plate, such as the lOOm level. The steps can be divided into work platforms, safety platforms, transportation platforms and cleaning platforms according to their uses.
The final slope is the slope formed by the steps left after the end of mining to reach the final interface, and its position is generally fixed. The angle between the final slope and the horizontal plane is called the final slope angle. It is of great significance in the design and production of open pit mines. Its size directly affects the production capacity of open pit mining and open pit mines.
The main safety issues of open pit mines include safety problems in blasting operations, safety problems during mechanical operation, safety issues in transportation, safety issues in power use, safety issues in slope stability and drainage, and safety issues at the stage.
Betaine Hydrochloride CAS NO.590-46-5
It is an efficient, high-quality, economic, widely used in livestock, poultry, aquaculture food and nutrition-type additives.
Efficacy
1. As a high efficient methyl donor, it can partly replace methionine and choline chloride, and reduce feed cost. Its biological potency can be equivalent to three times DL-methionine, 50% choline chloride 1.8 times.
2. Promote fat metabolism, improve lean meat ratio of livestock and poultry, improve meat quality, reduce meat ratio.
3. Food attractant. Improving feed palatability is an ideal growth inducer for livestock, poultry and aquatic animals.
4. It's a buffer for osmolarity. Can improve the cold, heat, disease process and other ecological environment changes to adapt to increase the survival rate of juvenile fish, shrimp.
5. Maintain the intestinal function, and anti-coccidian drugs have a synergistic effect.
Technical indicators:
|
Items |
Indicator I |
Indicator II |
Indicator III |
Indicator IV |
Indicator V |
|
Appearance |
White crystalline powder |
White crystalline powder |
White crystalline powder |
White crystalline powder |
White crystalline powder |
|
Dry Base content |
98% |
98% |
98% |
95% |
70% |
|
As |
≤2ppm |
≤2ppm |
≤2ppm |
≤2ppm |
≤10ppm |
|
Heavy metal(Pb) |
≤10ppm |
≤10ppm |
≤10ppm |
≤10ppm |
≤30ppm |
|
Scorch residue |
≤0.5% |
≤0.5% |
≤1.0% |
≤4.0% |
≤28% |
|
Dry weight loss |
≤0.1% |
≤0.2% |
≤1.0% |
≤1.0% |
≤1.0% |
Packing: 25Kg paper-plastic composite bag lined with moisture-proof film bag.
Storage: placed in a dry and ventilated place, sealed storage, caking can be used, does not affect the quality.
Period of validity: one year
Other related items of our company:
1. Hydrazine Hydrate
2. Azodicarbonamide
3. 2-Aminophenol
4. Ferric Chloride Anhydrous
5. Choline Chloride
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