Q:Do not understand why some of the indicators of coke is the cause of the full analysis of phosphorus or foundry use of this time?It is best to use the foundry requirements? Thank you

Phosphorus is a kind of harmful element in metal, which reduces the mechanical properties of castings. Under normal circumstances, GB castings of phosphorus content requirements of less than 0.06%, the lower the special requirements

Q:What does Coke test index M25 mean?

The index of pore structure is mainly expressed by the porosity rate (the percentage of the total volume of coke), which affects the reactivity and strength of coke. Different uses of different coke porosity index requirements, the general requirements of metallurgical coke porosity in the 40 ~ 45%, 35 ~ 40% in coke, coke export demand in about 30%. Coke crack degree and the porosity level, and the coking coal has a direct relationship, such as coal based coke refining, crack, high porosity, low strength; with coal as the foundation of the coal refining coke crack less, low porosity and high strength. The strength of coke is usually represented by two indices of crushing strength and abrasion resistance

Q:Braised meat burning coke, iron black layer, I do not know how to clean, please help answer

Orange to the bottom of the potCut a few slices of orange into the pot boil, stuffy night, second days will be turned over the paste paste, it is easy to clean up.7, the old telephone card, magnetic card washing paste potProblem Description: run out of phone cards, shopping cards, discount cards, VIP cards piled up, although there are people who love this kind of thing, but most people had no interest, so, or use it to do something. When cooking is paste pot, if made of hard coke fouling cleaning shovel, cause scratches with the wooden shovel, and difficult to completely remove the coke fouling. Why not let those old cards reflect the use value?Method of operation: with the card along the edge of the pot, and gradually remove the coke scale clean. Note that when you do not need to force too hard. If the card is made of hard plastic, can also be used to scrape the dirt on the gas stove.

Q:How to calculate the average particle size of coke

That is, "(volume) of the table of the percentage, in addition to the corresponding boundary value", these values are added, then the countdown. For example, the boundary 0 to 1 has a value of 10%, between 1 and 2, and between 2 and 4 has a value of 40%, and between 4 and 8, then D (3,2) = / (0.1/0.5 + 0.3/1.5 + 0.4/3 + 0.2/6) = 1/ (+ + 0.2 + + + 0.13 + +) = 1/0.56 = = =

Q:Coke belongs to the coal industry

11 other mining industry 28 chemical fiber manufacturing 58 warehousing industryC manufacturing 29 rubber products 59 postal industry13 agricultural and sideline products processing industry 30 plastic products G information transmission, computer services and software industry31 grain grinding of non metallic products 60 telecommunications and other information transmission services 13101320 feed 311 cement, lime and gypsum manufacturing 601 Telecommunications133 vegetable oil 312 cement and gypsum products manufacturing 6020 Internet information1340 sugar 313 brick, stone and other building materials 603 broadcast television transmission135 slaughter and meat 314 glass and glass products 604 satellite transmission136 aquatic products 315 ceramic products 61 computer services

Q:I work in the coking plant, so there are conditions to get coke and is burning, I would like to use coke barbecue line? Just like charcoal Mutton Cubes Roasted on a Skewer, OK? Understand the answer

Under the condition of air isolation, the bituminous coal is heated to 950-1050 DEG C, which is finally made into coke by drying, pyrolysis, melting, bonding, solidification and shrinkage.

Q:What is the difference between coal and coke, heat, price, pollution, smoke, odor. Thank you experts answer

In terms of combustion, coal coke is a high pollution, therefore, coke pollution is less than coal. Coke smoke is very little, the smoke of coal is relatively large, there is also a high quality of soot rarely. When the coal is burning, the smell is bigger and the coke is not completely burnt, so the taste is small.

Q:What does the M40% and M25% mean in the analysis of coke?

(1) crushing strength (shatter strength): the ability of a certain particle size coal sample to fall under the condition of free fall.

Q:We would like to export a batch of coke, I would like to know what information is required for a permit

2013 coke export tariffs and quota system has been canceled, with foreign trade business qualifications can be engaged in foreign trade coke business. After signing the coke export contract with the foreign trade, the foreign trade enterprise needs to apply for the electronic key to apply for the export license. The electronic key and export license shall be handled as follows:

Q:Why is coke used in blast furnace steelmaking?Why not use coal?

(2) reduction: high temperature gas generated in coke combustion in the raceway, passed to the material in the process of heat rising, the endothermic reaction and coke formation, CO and H2, then CO and iron oxide in iron ore reduction reaction is transformed into metallic iron.(3) the role of the skeleton: the blast furnace smelting process occurs in the movement and interaction between the rising of the gas and the falling of the charge. The pellets, coke, iron ore, ore and other materials according to a certain proportion, and batch sequence into a blast furnace, blast furnace smelting in reducing atmosphere under the hot metal, after providing to the steelmaking plant of the steel-making.