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Proses Mwyndoddi Silicon Ar Gyfer Diwydiant Cemegol
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Proses Mwyndoddi Silicon Ar Gyfer Diwydiant Cemegol

Proses Mwyndoddi Silicon Ar Gyfer Diwydiant Cemegol

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Mae'r broses dechnolegol o silicon ar gyfer defnydd cemegol yn cynnwys paratoi tâl ffwrnais, mwyndoddi ffwrnais trydan, mireinio a chastio silicon, a malu ar gyfer cael gwared â chynhwysion slag. Rhaid i bob deunydd crai gael triniaeth angenrheidiol cyn paratoi'r tâl. Mae'r silica yn cael ei falu yn y gwasgydd ên nes nad yw maint y darnau yn fwy na 100mm, ac mae'r darnau llai na 5mm yn cael eu sgrinio allan a'u golchi â dŵr. Oherwydd bod y darnau yn y ffwrnais wedi'u toddi yn rhan uchaf y ffwrnais, mae athreiddedd nwy y tâl yn cael ei leihau, gan wneud y broses gynhyrchu yn anodd. Mae gan golosg petrolewm ddargludedd trydanol cymharol uchel, felly rhaid ei dorri i faint o ddim mwy na 10mm, a rhaid rheoli faint o bowdr golosg petrolewm. Oherwydd ei fod yn llosgi'n uniongyrchol ar geg y ffwrnais, bydd yn achosi asiant lleihau annigonol.

 

Wrth gynhyrchu silicon cemegol, gall glo bitwmin ddisodli siarcol yn llwyr, fel glo bitwminaidd wedi'i fireinio Hunan Zhuzhou, mae'r carbon sefydlog yn cyrraedd 77.19 y cant, y mater anweddol yw 19.4 y cant, y cynnwys lludw yw 3.41 y cant, y cynnwys Fe2O3 yw {{8} }} .22 y cant , y cynnwys Al2O3 yw { { 12}} .99 y cant , a'r cynnwys CaO yw { { 14 }} . 17 y cant . . Yn ôl arfer cynhyrchu, mae'n ymarferol defnyddio'r math hwn o lo bitwminaidd i fwyndoddi silicon cemegol.

 

Mae blociau a sglodion ar gyfer cynhyrchu silicon ar gyfer defnydd cemegol yn cael eu prosesu gyda thorwyr pren a naddion pren. Yr asiant lleihau carbonaidd yn y tâl ffwrnais yn bennaf yw golosg petrolewm a glo bitwminaidd, ac mae faint o flociau pren a sglodion pren yn dibynnu ar amodau'r ffwrnais. Ni ddefnyddir pren wrth gynhyrchu, ond mae ansawdd y cynnyrch yn fwy sefydlog. Pennir cymhareb y tâl yn ôl gradd y cynnyrch y mae angen ei gynhyrchu. Mae cyfran y golosg petrolewm a glo bitwminaidd yn cael ei bennu yn ôl faint o garbon sydd ei angen ar gyfer pob swp o fwyn silicon. Mae cymhareb golosg petrolewm a glo bitwminaidd yn dylanwadu'n fawr ar wrthwynebiad gweithio'r tâl.

 

Ar ôl pwyso pob elfen o dâl y ffwrnais, mae'r tâl yn cael ei gymysgu'n gyfartal, ac ar ôl i'r ffwrnais gael ei phwnio, mae'r tâl cymysg unffurf yn cael ei ychwanegu at y ffwrnais. Cadwch uchder penodol o'r wyneb deunydd a bwydo'n gyfartal.

 

Mae cynhyrchu silicon cemegol yn barhaus. Nid yw'r amodau y tu mewn i'r ffwrnais yn dragwyddol ychwaith. Mae cynhyrchu silicon cemegol yn broses lle mae ynni trydan yn cael ei drawsnewid yn ynni gwres mewn ffwrnais drydan, ac yna defnyddir yr egni gwres i wresogi'r deunydd yn uniongyrchol i gynhyrchu adwaith cemegol. Felly, mae'r nodweddion trydanol yn y ffwrnais yn bwysig iawn. Mae'r gweithrediad mwyndoddi yn arc caeedig i gynnal y ffwrnais tymheredd uchel, gwella'r effeithlonrwydd thermol, a gwella cyfradd defnyddio'r ffwrnais drydan. Yn yr ymchwil, defnyddir ffwrnais silicon metel gyda chynhwysedd o 3200KVA a 6300KVA. Gwneir y mwyndoddi trwy fudferwi am gyfnod penodol o amser a bwydo dwys yn rheolaidd. O dan amgylchiadau arferol, mae'n anodd i'r tâl suddo'n awtomatig, ac yn gyffredinol mae angen gorfodi'r tâl i suddo. Mae cyflwr y ffwrnais yn hawdd i amrywio ac yn anodd ei reoli. Felly, mae angen barnu'n gywir a delio ag ef mewn pryd wrth gynhyrchu. Mae'r ffwrnais yn cael ei danio bob 4 awr ar gyfer sgwrio a chastio, ac mae'r slag yn cael ei dorri a'i ddidoli i storfa.

 

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.

 

Cynnwys Cynhyrchion
Graddau cynnyrch Cyfansoddiad cemegol Cyfansoddiad cemegol Cyfansoddiad cemegol Cyfansoddiad cemegol
    amhureddau ( y cant ) amhureddau ( y cant ) amhureddau ( y cant )
  Si cynnwys ( cant ) Ab 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
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