Silicio lydymo procesas chemijos pramonei
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Silicio lydymo procesas chemijos pramonei

Silicio lydymo procesas chemijos pramonei

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Cheminiam naudojimui skirto silicio technologinis procesas apima krosnies užtaiso paruošimą, elektrinį krosnies lydymą, silicio rafinavimą ir liejimą bei smulkinimą šlako inkliuzams pašalinti. Prieš ruošiant užpildą, visos žaliavos turi būti tinkamai apdorotos. Silicio dioksidas smulkinamas žandikaulių trupintuvu, kol gabalėlių dydis neviršija 100 mm, o mažesni nei 5 mm gabalėliai yra atsijojami ir nuplaunami vandeniu. Kadangi krosnyje esantys fragmentai išsilydo viršutinėje krosnies dalyje, sumažėja įkrovos dujų pralaidumas, todėl gamybos procesas apsunkinamas. Naftos kokso elektrinis laidumas yra santykinai aukštas, todėl jį reikia sulaužyti iki 10 mm dydžio, o naftos kokso miltelių kiekį reikia kontroliuoti. Kadangi jis dega tiesiai ant krosnies žiočių, dėl jo nebus pakankamai redukuojančios medžiagos.

 

Cheminio silicio gamyboje bituminė anglis gali visiškai pakeisti medžio anglį, pvz., Hunan Zhuzhou rafinuotą bituminę anglį, fiksuota anglis siekia 77,19 proc., lakiųjų medžiagų kiekis yra 19,4 proc., pelenų kiekis yra 3,41 proc., Fe2O3 kiekis yra {{8 }},22 proc., Al2O3 kiekis yra 0,99 proc., o CaO kiekis yra 0,17 proc. . Remiantis gamybos praktika, tokią bituminę anglį galima naudoti cheminiam siliciui lydyti.

 

Blokai ir drožlės, skirtos silicio gamybai cheminiam naudojimui, apdorojamos medienos pjaustytuvais ir medienos smulkintuvais. Anglies reduktorius krosnies įkrovoje daugiausia yra naftos koksas ir bituminė anglis, o medienos trinkelių ir medžio drožlių kiekis priklauso nuo krosnies sąlygų. Mediena gamyboje nenaudojama, tačiau gaminio kokybė stabilesnė. Mokesčio santykis nustatomas pagal reikalingo pagaminti produkto rūšį. Naftos kokso ir bituminės anglies santykis nustatomas pagal anglies kiekį, reikalingą kiekvienai rūdos silicio partijai. Naftos kokso ir bituminės anglies santykis turi didelę įtaką įkrovos darbiniam atsparumui.

 

Pasvėrus kiekvieną krosnies įkrovos komponentą, įkrova tolygiai sumaišoma, o sumušus krosnį, tolygiai sumaišytas krosnis įpilamas į krosnį. Išlaikykite tam tikrą medžiagos paviršiaus aukštį ir maitinkite tolygiai.

 

Cheminio silicio gamyba vyksta nuolat. Sąlygos krosnies viduje taip pat nėra amžinos. Cheminė silicio gamyba yra procesas, kurio metu elektros energija elektrinėje krosnyje paverčiama šilumos energija, o tada ši energija naudojama medžiagai tiesiogiai kaitinti, kad būtų įvyksta cheminė reakcija. Todėl krosnies elektrinės charakteristikos yra labai svarbios. Lydymo operacija yra uždaro lanko, kad būtų išlaikyta aukštos temperatūros krosnis, pagerintas šiluminis efektyvumas ir pagerintas elektrinės krosnies panaudojimo greitis. Tyrime naudojama 3200KVA ir 6300KVA galios metalinė silicio krosnis. Lydymas atliekamas troškinant tam tikrą laiką ir reguliariai koncentruotai maitinant. Įprastomis aplinkybėmis įkrovimui sunku nuskęsti automatiškai, todėl paprastai reikia priversti įkrovą nuskęsti. Krosnies būklė lengvai svyruoja ir sunkiai valdoma. Todėl gamyboje būtina teisingai įvertinti ir laiku su tuo susidoroti. Krosnis kas 4 valandas kūrenama šveitimui ir liejimui, o šlakas sulaužomas ir rūšiuojamas į saugyklą.

 

Smelting process of silicon for chemical industry  The technological process of silicon for chemical use includes furnace charge preparation, electric furnace smelting, silicon refining and casting, and crushing for removing slag inclusions. All raw materials must undergo necessary treatment before the charge is prepared. The silica is crushed in the jaw crusher until the size of the pieces is not more than 100mm, and the pieces smaller than 5mm are screened out and washed with water. Because the fragments in the furnace are melted in the upper part of the furnace, the gas permeability of the charge is reduced, making the production process difficult. Petroleum coke has a relatively high electrical conductivity, so it must be broken to a size of no more than 10mm, and the amount of petroleum coke powder must be controlled. Because it burns directly on the furnace mouth, it will cause insufficient reducing agent.  In the production of chemical silicon, bituminous coal can completely replace charcoal, such as Hunan Zhuzhou refined bituminous coal, the fixed carbon reaches 77.19%, the volatile matter is 19.4%, the ash content is 3.41%, the Fe2O3 content is 0.22%, the Al2O3 content is 0.99%, and the CaO content is 0.17%. . According to production practice, it is feasible to use this kind of bituminous coal to smelt chemical silicon.  Blocks and chips for the production of silicon for chemical use are processed with timber cutters and wood chippers. The carbonaceous reducing agent in the furnace charge is mainly petroleum coke and bituminous coal, and the amount of wood blocks and wood chips depends on the furnace conditions. Wood is not used in production, but the product quality is more stable. The ratio of the charge is determined according to the grade of the product required to be produced. The proportion of petroleum coke and bituminous coal is determined according to the amount of carbon required for each batch of ore silicon. The ratio of petroleum coke and bituminous coal has a great influence on the working resistance of the charge.  After each component of the furnace charge is weighed, the charge is mixed evenly, and after the furnace is pounded, the uniformly mixed charge is added to the furnace. Keep a certain height of the material surface and feed evenly.  Chemical silicon production is continuous. The conditions inside the furnace are not eternal either. Chemical silicon production is a process in which electric energy is converted into heat energy in an electric furnace, and then the heat energy is used to directly heat the material to produce a chemical reaction. Therefore, the electrical characteristics in the furnace are very important. The smelting operation is closed-arc to maintain the high temperature furnace, improve the thermal efficiency, and improve the utilization rate of the electric furnace. In the research, a metal silicon furnace with a capacity of 3200KVA and 6300KVA is used. The smelting is carried out by simmering for a certain period of time and regular concentrated feeding. Under normal circumstances, it is difficult for the charge to sink automatically, and it is generally necessary to force the charge to sink. The furnace condition is easy to fluctuate and difficult to control. Therefore, it is necessary to judge correctly and deal with it in time in production. The furnace is fired every 4 hours for scouring and casting, and the slag is broken and sorted into storage.Smelting process of silicon for chemical industry  The technological process of silicon for chemical use includes furnace charge preparation, electric furnace smelting, silicon refining and casting, and crushing for removing slag inclusions. All raw materials must undergo necessary treatment before the charge is prepared. The silica is crushed in the jaw crusher until the size of the pieces is not more than 100mm, and the pieces smaller than 5mm are screened out and washed with water. Because the fragments in the furnace are melted in the upper part of the furnace, the gas permeability of the charge is reduced, making the production process difficult. Petroleum coke has a relatively high electrical conductivity, so it must be broken to a size of no more than 10mm, and the amount of petroleum coke powder must be controlled. Because it burns directly on the furnace mouth, it will cause insufficient reducing agent.  In the production of chemical silicon, bituminous coal can completely replace charcoal, such as Hunan Zhuzhou refined bituminous coal, the fixed carbon reaches 77.19%, the volatile matter is 19.4%, the ash content is 3.41%, the Fe2O3 content is 0.22%, the Al2O3 content is 0.99%, and the CaO content is 0.17%. . According to production practice, it is feasible to use this kind of bituminous coal to smelt chemical silicon.  Blocks and chips for the production of silicon for chemical use are processed with timber cutters and wood chippers. The carbonaceous reducing agent in the furnace charge is mainly petroleum coke and bituminous coal, and the amount of wood blocks and wood chips depends on the furnace conditions. Wood is not used in production, but the product quality is more stable. The ratio of the charge is determined according to the grade of the product required to be produced. The proportion of petroleum coke and bituminous coal is determined according to the amount of carbon required for each batch of ore silicon. The ratio of petroleum coke and bituminous coal has a great influence on the working resistance of the charge.  After each component of the furnace charge is weighed, the charge is mixed evenly, and after the furnace is pounded, the uniformly mixed charge is added to the furnace. Keep a certain height of the material surface and feed evenly.  Chemical silicon production is continuous. The conditions inside the furnace are not eternal either. Chemical silicon production is a process in which electric energy is converted into heat energy in an electric furnace, and then the heat energy is used to directly heat the material to produce a chemical reaction. Therefore, the electrical characteristics in the furnace are very important. The smelting operation is closed-arc to maintain the high temperature furnace, improve the thermal efficiency, and improve the utilization rate of the electric furnace. In the research, a metal silicon furnace with a capacity of 3200KVA and 6300KVA is used. The smelting is carried out by simmering for a certain period of time and regular concentrated feeding. Under normal circumstances, it is difficult for the charge to sink automatically, and it is generally necessary to force the charge to sink. The furnace condition is easy to fluctuate and difficult to control. Therefore, it is necessary to judge correctly and deal with it in time in production. The furnace is fired every 4 hours for scouring and casting, and the slag is broken and sorted into storage.

 

Produktų turinys
Produktų klasės Cheminė sudėtis Cheminė sudėtis Cheminė sudėtis Cheminė sudėtis
    Priemaišos (procentais) Priemaišos (procentais) Priemaišos (procentais)
  Si kiekis (procentais) Fe Al Ca
1101 99.79 0.1 0.1 0.01
2202 99.58 0.2 0.2 0.02
2502 99.48 0.25 0.25 0.02
3303 99.37 0.3 0.3 0.03
411 99.4 0.4 0.1 0.1
421 99.3 0.4 0.2 0.1
441 99.1 0.4 0.4 0.1
551 98.9 0.5 0.5 0.1
553 98.7 0.5 0.5 0.3
DUK

K: Ar sutinkate su OEM?
A: Taip, mes priimame OEM. Tai mūsų specialybė.

Kl .: Ar esate gamykla ar prekybos įmonė?
A: Mes esame gamintojai.

K: Ar esate gamintojas ar prekybininkas?
A: Mes tikrai esame gamintojas, mes ne tik galime pateikti aukštos kokybės produktus už geriausią kainą, bet ir galime pasiūlyti geriausią aptarnavimą prieš pardavimą ir aptarnavimą po jo.

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