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Räni sulatusprotsess keemiatööstuse jaoks
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Räni sulatusprotsess keemiatööstuse jaoks

Räni sulatusprotsess keemiatööstuse jaoks

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Kirjeldus

 

Toodete kirjeldus

Keemiliseks kasutamiseks mõeldud räni tehnoloogiline protsess hõlmab ahjulaengu ettevalmistamist, elektriahju sulatamist, räni rafineerimist ja valamist ning purustamist räbu lisandite eemaldamiseks. Kõik toorained peavad läbima vajaliku töötlemise enne laadimise ettevalmistamist. Ränidioksiid purustatakse lõualuupurustis, kuni tükkide suurus ei ületa 100 mm ning alla 5 mm suurused tükid sõelutakse välja ja pestakse veega. Kuna ahjus olevad killud sulavad ahju ülemises osas, väheneb laengu gaasi läbilaskvus, mis muudab tootmisprotsessi keeruliseks. Naftakoksil on suhteliselt kõrge elektrijuhtivus, seetõttu tuleb see purustada kuni 10 mm suuruseks ja kontrollida naftakoksi pulbri kogust. Kuna see põleb otse ahjusuudmes, põhjustab see ebapiisavalt redutseerivat ainet.

 

Keemilise räni tootmisel võib bituumensüsi täielikult asendada puusüsi, näiteks Hunan Zhuzhou rafineeritud bituumensüsi, fikseeritud süsinik ulatub 77,19 protsendini, lenduvate ainete sisaldus on 19,4 protsenti, tuhasisaldus on 3,41 protsenti, Fe2O3 sisaldus on {{8 }},22 protsenti , Al2O3 sisaldus on 0,99 protsenti ja CaO sisaldus 0,17 protsenti . . Tootmispraktika kohaselt on seda tüüpi bituumensütt võimalik kasutada keemilise räni sulatamiseks.

 

Keemiliseks kasutamiseks mõeldud räni tootmiseks mõeldud plokid ja laastud töödeldakse puidulõikurite ja puiduhakkuritega. Ahjulaengu süsinikusisaldusega redutseerija on peamiselt naftakoks ja bituumenkivisüsi ning puiduplokkide ja hakkepuidu kogus sõltub ahju tingimustest. Tootmises puitu ei kasutata, kuid toote kvaliteet on stabiilsem. Tasu suhe määratakse vastavalt tootatava toote klassile. Naftakoksi ja bituminoosse kivisöe osakaal määratakse iga ränimaagi partii jaoks vajaliku süsiniku koguse järgi. Naftakoksi ja bituminoosse kivisöe vahekorral on suur mõju laengu töökindlusele.

 

Pärast ahjulaengu iga komponendi kaalumist segatakse laeng ühtlaselt ja pärast kolde purustamist lisatakse ahju ühtlaselt segatud laeng. Hoidke materjali pinna teatud kõrgusel ja söödake ühtlaselt.

 

Keemiline räni tootmine on pidev. Ka ahjusisesed tingimused pole igavesed. Keemiline räni tootmine on protsess, mille käigus elektrienergia muudetakse elektriahjus soojusenergiaks ja seejärel kasutatakse soojusenergiat materjali otseseks kuumutamiseks keemilise reaktsiooni tekitamiseks. Seetõttu on ahju elektrilised omadused väga olulised. Sulatusoperatsioon on suletud kaar, et säilitada kõrge temperatuuriga ahju, parandada soojuslikku efektiivsust ja parandada elektriahju kasutusmäära. Uurimistöös kasutatakse metallist räniahju võimsusega 3200KVA ja 6300KVA. Sulatamine toimub teatud aja jooksul keetmise ja regulaarse kontsentreeritud söötmise teel. Tavaolukorras on laengul raske automaatselt vajuda ning üldjuhul on vaja laeng sundida vajuma. Ahju seisukord on kergesti kõikuv ja raskesti kontrollitav. Seetõttu tuleb tootmises õigesti hinnata ja sellega õigeaegselt tegeleda. Ahju köetakse iga 4 tunni järel küürimiseks ja valamiseks ning räbu purustatakse ja sorteeritakse hoidlasse.

 

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.

 

Toodete sisu
Toote klassid Keemiline koostis Keemiline koostis Keemiline koostis Keemiline koostis
    Lisandid (protsent) Lisandid (protsent) Lisandid (protsent)
  Si sisaldus (protsent) 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
KKK

K: Kas nõustute OEM-iga?
V: Jah, me aktsepteerime OEM-i. See on meie eriala.

K: Kas olete tehas või kaubandusettevõte?
V: Oleme tootja.

K: Kas olete tootja või kaupleja?
V: Oleme tõeliselt tootja, me mitte ainult ei suuda pakkuda kvaliteetseid tooteid parima hinnaga, vaid saame pakkuda ka parimat müügieelset teenust ja järelteenindust.

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