2013年7月25日星期四

Oil proppant is what produced it, and you know how much

Ceramic proppant equipment required for the production of oil fracturing proppant process: Project native aluminum vanadium powder and fly ash, through computer batching system in accordance with formula requires raw materials, ingredients for mixing ingredients were sent after processing into ceramic Odds of the ceramic ball, pellets after drying for screening, after passing inspection become semi, and then fed into the kiln firing semi-finished, after grading, polishing, screening, dust, inspection, packaging finished.
     ceramic proppant  production process mainly includes the following several aspects:
    1, preheating: preheating stage is actually a continuation of the drying, but less than the drying temperature is higher, so the water into the rotary kiln ≤ 5%, because of its high temperature, some chemical reactions at this time to begin the.
    2, firing: firing process is a whole process of the most important aspects of its direct impact strength and high density ceramic proppant product performance, the entire complex chemical reactions firing link from the composition point of view, mainly ɑ-Al2O3 corundum phase, glass phase, mullite or mullite - corundum equal, the firing temperature is 1300 ℃.
    3, the cooling: high temperature ceramic product showed a thermoplastic state, generally quenched induced cracking, as long as the cooling is not uniform because of damage caused by the internal stress of the ceramic is based on the temperature unevenness caused by the internal temperature ceramic gradient, so under normal circumstances, will not affect the ceramic quench broken.
    4, crushing: After mixing well after wet powder as high moisture, after the release of the mixer, grinder required a large lump clod crushing, grinding fineness more detailed the better; otherwise it will affect the quality of subsequent process.
    5, once screening: a screening is to have a good semi-rough for a particle size classification, semi-finished products need to comply with the grain of 1.00mm ~ 0.75mm; while for> 1.00mm particles of grain only as scrap, Re-recycling waste; while <0.75mm particle size fractions shall be liable for the cue ceramic ball repeatedly recycled; finally meet 1.00mm ~ 0.75mm particle size fractions into the next process.
    6, Drying: After a screening sieve particles out of line with the grain of the semi-finished products with high moisture content (about 10 percent), just as it is necessary to carry out moisture drying out of the semi-finished products, in order to avoid firing into process to produce adverse effects generally drying temperature is about 175 ℃ ~ 275 ℃; addition, the drying drying material according to the case can be properly adjusted Ceramic proppant rotary kiln speed.
    7, the second screening: the second screening with a sieving principle is completely the same, but is a two step screening and drying in a number of semi-finished products produced defects for more effective grain size classification of the particles, For example, in a sieve and screening is incomplete, <0.75mm grain particles into the next process; Further, in the drying stage, the semi-finished blanks out some of the dust does not come off in the second screening enters the what procedure, etc., secondary screening to ensure more favorable firing quality and product yield.
    8, the finished Ceramic proppant screening: Screening is cooked finished ceramic particle size fractions of a classification.
    9, finished oil fracturing proppant pack: At this point you can have a good product packager screening, they number into the warehouse area to be tested, waiting for test delivery.
    10, slag buy: This project is a direct purchase of ore to meet the requirements for ingredients.
    11, ingredients: When processing ore after their acceptance, they can press a certain weight weighing good, good logo into the coffers, according to a certain weight materials have been weighed into the Treasury; Thus, by weight batching method, together A certain amount of ore with a certain amount of materials into the mixer.
    12, mixing: Mixing also known mixing, ceramic products is a very important one process step, it is accompanied by a certain degree of pressure agent, kneading, exhaust, the blank of uniform composition and properties, the quality of the unit or volume having the same composition and particle composition, generally kneaded after about 20 minutes. Will be in the mixer plus 10% of the water, and then continue stirring mixing, mixing until about 45 minutes later, you can discharge into the next process.
    13, Ceramic proppant into a  ceramic ball   First make the cue ceramic ball will be a certain amount of wet powder into a ceramic ball into the machine, turn the 3 to 5 minutes, then stir until the material Kai spray device; spray device to open the first open gas and then water, the gun a good tune, requiring good atomization effect, allowed to have water leakage, the materials placed in the mouth spray flip the fastest parts of the above requirements mist sprayed into the material as much as possible, stop off the water when the first spray device then off the gas. When the material to be a ceramic ball, according to the material's moisture level in proportion to add some dry, then wet, add flour, and so on, so that the cue ceramic ball to be achieved gradually grown to semi until both semi-dense, and roundness,  ceramic ball  degrees and other technical indicators meet the requirements.

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