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Advantages and disadvantages of coal
- Coal: ordinary coal is not so easy to ignite, causing acid rain and other environmental pollution,s
The basic situation of coal occurrence in coal mining area
- (1) the origin of the edge coal. The main reasons for the formation of edge coal are as followsThe arrangement mode of the utility model is that the straight groove and the cutting hole are directly connected to form a cutting edge triangle coal,Is the formation of the edge of the coal artificial factors; two is affected by the fault and geological structure, can not ruleIt is a natural factor for the formation of the edge coal to arrange the complex block of the working face. ThreeThe coal pillar and the coal pillar in the mining area have a certain mining value:s
Coal formation process and time
- The thickness of coal seam in a coal mine and the crust drop speed and accumulation amount of plant remains. The crust decreased rapidly, the plant remains piled thick, the coal seam is thick, on the other hand, the crust decline slowly, the accumulation of plant remains thin, the mine coal seam is thin. The tectonic movement of the crust to the original level of coal seam folds and faults occur, some underground coal seam buried deeper, and squeezed to the surface, even above the ground, more likely to be found. There are some relatively thin coal seam, and the area is not large, so there is no value related to the formation of coal mining, so far not find the update statement.s
What is the difference between coal and coal?
- According to the law of the people's Republic of China (1993) on the issuance of the "Regulations on the implementation of the Provisional Regulations of the People's Republic of China on resource tax", the article points out in the second paragraph of article third:s
Activated carbon mask can be used for how long to kill
- Preparation of two masks, exchange use, used during the day, after work away from the workplace, place ventilation. Each with 3 days x 8 hours to open a clean, dry, because the surface has been painted powder, use after 60 hours to replace the new carbon.s
Activated carbon will have something to drink?
- A small amount of words will not be good for the body, but long-term drinking is not a good thing, may lead to excessive carbon content in the body you can take some time in the activated carbon.s
Why is coal spontaneous combustion?
- Coal heap in contact with air oxidation occurs, and emit heat. Coal oxidation reaction occurs after the coal pile temperature increases. The coal temperature increases, and the speed of coal oxidation was accelerated. In this way, the temperature makes the coal pile increasing. When the temperature exceeds the coal self ignition when will the spontaneous combustions
Why just renovated the house put a plant, activated carbon, bamboo charcoal, the taste is still great
- 4, formaldehyde scavenger removal method.This method is the most direct and effective, but the requirements of the product is also very professional, at present this kind of products are chemical products, nano photocatalyst, plant raw materials in addition to formaldehyde products. Some of these products will be some "two pollution" so be careful to use.5, the soil method.300 grams of black tea bubble tea basin water, into the room, and the window ventilation two. In addition, you can also put some grapefruit peel, orange peel, pineapple, etc.. These things have a certain effect.s
There are many kinds of solar power products
- There are many kinds of solar power products, below I will introduce some products in our common life.solar power products---Solar panels The sun shines on the semiconductor p-n ju...
Do you know what the biogas definition is
- Biogas definition：The organic matter under anaerobic conditions, through fermentation of microorganisms to produce a mixed gas.Biogas, by biogas definition is swamp gas. People o...
future development of cheap solar power
- In recent years, the domestic solar energy market will be faster development, the current residential and public construction and other hot water projects accounted for 40% of the ...
Five Things to Look for When Buying Solar Panels
- Five things to look for when buying Solar PanelsBefore you rush out and install solar panels in your home or workplace, there are some basic things you need to understand. In simpl...
heating test with water solar panels
- Recently, some friends want to use solar water heater to heat the fish tank. My idea is to use water solar panels directly to heat.The usual practice of using solar power is that t...