Silicon Metal Dwumadie Nkyerɛkyerɛmu

1. Electric Arc Furnace Tumi ne Nneɛma a Wɔyɛ

33,000 kVA semi-a wɔato mu anyinam ahoɔden arc fononoo, mfiridwuma silicon fononoo a ɛkyinkyini;
Silicon dade nneɛma bɛyɛ tɔn 55 a wɔyɛ da biara da.

2. Nneɛma a wɔyɛ ho nyansahyɛ

Ɔfa	Nnuru a ɛwɔ mu, % .
	Si Kɛse sen anaasɛ ɛne no yɛ pɛ	Efĩ a ennu anaasɛ ɛyɛ pɛ
	Silicon a ɛwɔ din mu	Fe	Al	Ca
Si4110 na ɛwɔ hɔ	99.40	0.40	0.10	0.10
Si4210 na ɛwɔ hɔ	99.30	0.40	0.20	0.10
Si4410 na ɛwɔ hɔ	99.10	0.40	0.40	0.10
Si5210 na ɛwɔ hɔ	99.20	0.50	0.20	0.10
Si5530 na ɛwɔ hɔ	98.70	0.50	0.50	0.30

3. Raw material tebea ne mfiridwuma ho ahwehwɛde ma ɔmanfo ne nsɛm ho amanneɛbɔfo aboafo

Silicon a wɔde dade yɛ no titiriw de quartz di dwuma sɛ ade titiriw a wɔde yɛ nneɛma, a wɔde fango, fango, anaa petroleum coke a nsõ kakraa bi na ɛyɛ-a ka ho de abɔ fononoo no mu, a wɔde nnua a wɔde yɛ nneɛma a ɛboa ka ho. Nneɛma a wɔayɛ no yiye a wɔde bɛbɔ fononoo no mu no yɛ ade titiriw a wɔde hwɛ hu sɛ fononoo no bɛyɛ adwuma yiye, ama nneɛma no ayɛ papa, na wɔatew ɛka a wɔbɔ wɔ nneɛma a wɔyɛ no so. Sɛnea nnyinasosɛm ahorow a ɛfa nneɛma a wɔayɛ no yiye a wɔbɔ ho ka kyerɛ no, mfiridwuma mu ahwehwɛde ahorow a ɛfa nneɛma atitiriw a wɔde yɛ nneɛma ho no te sɛ nea edidi so yi:

3.1 Quartz a wɔde yɛ nneɛma

Wɔakyerɛ nnuru a wɔhwehwɛ wɔ quartz mu wɔ Table 1 mu.

Table 1-1 Nnuru a ɛwɔ muquartz a wɔde yɛ nneɛma

SiO₂	Fe₂O₃	Al₂O₃	CaO	LOI (Ɔhweree wɔ Ignition so) .	H₂O	UD
99.5%	0.04%	0.15%	0.05%	0.21	1%	0.05

Quartz kɛseɛ yɛ 20 ~ 120 mm.

Sɛ dɔte wɔ quartz no mu ansa na wɔayɛ no batch a, ɛsɛ sɛ wɔde nsu hohoro mu na amma dɔte ne nneɛma afoforo a ɛbata ho no ankɔ fononoo no mu na ansɛe ade no. Bio nso, ɛsɛ sɛ quartz su nya ɔhyew a ɛyɛ den na antiknock rating boro 80%, de hwɛ hu sɛ ɔhyew ahoɔden no bere a wɔde ahyɛ fononoo no mu akyi.

3.2 Nneɛma a ɛtew so

Nnuru a wɔhwehwɛ wɔ reductants mu no wɔakyerɛ wɔ Table 1.

Din	LAM Fango a Wɔde Yɛ Nneɛma	Green Pet coke a ɛyɛ ahabammono	Fango a wɔde yɛ nneɛma	Carbon Electrode a Wɔadi kan Atow
FC na ɛwɔ hɔ	54~60	88.00	75	95.00
Nneɛma a ɛyɛ hyew	Ɛboro anaasɛ ɛne no yɛ pɛ 35	Ɛboro anaasɛ ɛne no yɛ pɛ 13	21	2.00
Nso	Ennu anaasɛ ɛne 3 yɛ pɛ	Ennu anaasɛ ɛne 0.5 yɛ pɛ	4	3.00
S	0.500	4	0.02	-
P	0.004	0.02	0. 045
H2O	7.00	12.00	15	-
Nneɛma nketenkete no kɛse, mm	5~25	5~25	25~120	-

3.3 Ɛlektrode a wɔde di dwuma

Wɔ saa adwuma yi mu no, wɔpaw electrodes a ɛwɔ 33 MVA silicon dade anyinam ahoɔden arc fononoo mu sɛ φ1272 mm electrodes, a electrode diameter margin a ɛboro so a wɔma ho kwan a ɛyɛ 1320 mm a wɔde asie. Wɔakyerɛ mfiridwuma mu ahwehwɛde ahorow a ɛfa electrode ahorow no ho wɔ pon a ɛwɔ ase ha no mu:

Nneɛma a wɔde ko tia	Ahoɔden a wɔde twetwe nneɛma	Ahoɔden a ɛma ɛpaapae	Nso	Volume density a ɛyɛ den
＜25μΩ/m	>2.5Mpa na ɛwɔ hɔ	>5Mpa na ɛwɔ hɔ	＜1.5%	1.56-1.61g/cm3 na ɛwɔ hɔ

3.4 Oxygen ne mframa a wɔahyɛ no den

Wɔde oxygen di dwuma titiriw wɔ silicon dade a ɛyɛ nsu a wɔde yɛ nneɛma foforo mu. Ahotew no boro 92% na nhyɛso no yɛ 0.6Mpa.

Wɔde mframa a wɔahyɛ no den di dwuma de tew mfutuma a wɔboaboa ano, fononoo adwumayɛbea a wɔde tew ho, silicon ladle ahotew, mframa a wɔde di dwuma, ne nea ɛkeka ho, wɔ nhyɛso a ɛyɛ 0.6 MPa mu.

3.5 Tumi fibea tebea

Smelting tumi a ɛma ahoɔden ma nsu ase arc fononoo: 30 / 35 / 66 / 110 kV

Nneɛma a ɛma ahoɔden: 11/10kV
Mpɛn dodow a wɔde yɛ adwuma: 50Hz
AC400/230V a ɛwɔ ahoɔden a ɛba fam

4. Adwuma no mu nneɛma a wɔyɛ (33MVA) .

Daabi.	Adeɛ	Ɔfa	Fononoo Baako Index	Nsɛm a Wɔka
1	Deɛ ahoɔden bɛtumi		18000	Production wɔ adesoa a edi mũ akyi akatua
2	Compensated tumi factor a nsu ase arc fononoo		Ɛboro anaasɛ ɛne 0.83 yɛ pɛ
3	Smelting tumi a wɔde di dwuma	kWh/t	Ennu anaasɛ ɛne 12000 yɛ pɛ
4	Afe afe adwuma nna	Nna	330
5	Nneɛma a wɔyɛ	t/a	~16500	Nneɛma a wɔyɛ: 92% .
6	Fononoo a wɔde yɛ adwuma	kVA	33000
7	Tumi a ɛwɔ ɔfã biako transformer	kVA	Fononoo biara 3×11000	3 biako fase transformer
8	Si ahotɔ		＞82%
9	Nsu a ɛkyinkyini a wɔde di dwuma dodow		＞98%
10	Emission concentration a main dust collector no yɛ pɛ anaasɛ ennu	mg/m3 na ɛwɔ hɔ	Ennu anaasɛ ɛne 10 yɛ pɛ

Smelting nhyehyɛe nnwinnade

Nnianim asɛm a ɛfa process flow ho

Nneɛma a Wɔde Yɛ Nneɛma a Wɔde Yɛ Nneɛma a Wɔde Yɛ Adwuma

Wɔde nneɛma a wɔde yɛ adwuma no ho ka ne ne kyekyɛ nhyehyɛe a edi mũ ahyɛ adwumayɛbea no mu. Wɔahyehyɛ mfiri afoforo a wɔde hwehwɛ nneɛma mu, wɔbubu, hohoro, ne nneɛma afoforo a wɔde yɛ nneɛma a wɔde yɛ adwuma no yiye sɛnea nneɛma a wɔde yɛ nneɛma a ɛba no tebea te.

Wɔde lɔre anaa keteke de nneɛma a wɔde yɛ nneɛma a ɛfata nyinaa kɔ baabi a wɔkora nneɛma a wɔde yɛ adwuma no. Sɛ wɔyɛ ho adwuma wie a, wɔde grab cranes, belt conveyors, anaa loaders so de kɔ batching station no. Wɔ batching station no, wɔde mita nhyehyɛe kari nneɛma a wɔde yɛ nneɛma a ɛfata no na wɔde fra sɛnea dodow a wɔakyerɛ no te. Afei wɔde nneɛma a wɔafrafra no kɔ anyinam ahoɔden fononoo no mu ma wɔde nwene.

industrial silicon Introduction To Process Flow

Electric Fononoo a Wɔde Yɛ Nneɛma

01/

Nneɛma a ɛfata a wɔafrafra no fa surge bin, fononoo-top belt conveyor, circular distribution car, ne storage bin mu, na afei wɔde fa charge pipes so kɔ anyinam ahoɔden fononoo no mu ma ɛyɛ nwene na wɔtew so. Wɔde charge pipe a ɛboa a ɛwɔ fononoo no akyi ama ma wɔde nsa asiesie adesoa no ani wɔ adwumayɛ tebea titiriw mu.

02/

Nneɛma a wɔde afrafra no kɔ so tew anyinam ahoɔden so wɔ fononoo no mu. Wɔkɔ so yɛ silicon a ayow na ɛboaboa ano wɔ fononoo no ase. Wɔyɛ silicon tapping adwuma ahorow no bere ne bere mu. Bere a wɔrebɔ tap no, wɔde afiri a wɔde hyew-fa afiri mu bue tap tokuru no, na ɛma silicon a wɔabɔ no sen kɔ silicon ladle a wɔde ahyɛ ladle kar so. Sɛ silicon a ayɛ nwini a ɛwɔ ladle no mu no du baabi pɔtee bi a, wɔde oxygen gu mu ma wɔde yɛ silicon a ɛho tew.

03/

Wɔnam mframa a oxygen-ahyɛ mu ma a wɔbɔ kɔ ladle no mu de tew aluminium ne calcium a ɛwɔ mu no so na ɛyɛ ahotew. Bere a wɔayɛ no yiye awie no, wɔde silicon a wɔabɔ no kɔ baabi a wɔtow gu no, na wɔde krane a ɛwɔ soro anaa afiri a wɔde dannan no hwie gu ingot nkuku mu. Wɔde silicon dade ingot nkuku no asisi teaseɛnam a wotumi fa so, na ɛma wotumi yɛ fixed-point casting adwuma.

04/

Sɛ wɔma ɛyɛ nwini na wɔyi nkukuo fi mu wie a, wɔde mfiridwuma mu silicon no kɔ baabi a wɔawie-nneɛma a wɔde yɛ nneɛma no ma wɔbubu, wɔkyekyere, fa nhwɛsoɔ, na wɔyɛ nhwehwɛmu wɔ aduruyɛdan mu. Wɔhohoro silicon ladles a wɔde tow nneɛma no ho, siesie, na wɔtow bere a wɔahwie awie no, na wosiesie ma adwuma a edi hɔ a wɔde bɛbɔ no.

05/

Wɔde dry baghouse dedusting system na ɛtew fononoo off-gas no ho. Wɔma mfutuma a wɔaboaboa ano no yɛ den, wɔkyekyere, na wɔkora so, na wobetumi atɔn ama wɔn a wɔyɛ no sɛ ade a wɔde yɛ adansi nneɛma, nneɛma a ɛmma ogya ntumi nhyew, dɔte, ne nnwuma afoforo.

06/

Mfutuma a ɛwɔ mframa a wɔayi afi mu a wɔatew ho no mu no nnu anaasɛ ɛne 10 mg/Nm3 yɛ pɛ, na ɛne mpɔtam hɔ nneɛma a atwa yɛn ho ahyia ho mmara ne wim efĩ a wɔtow gu no gyinapɛn ahorow hyia.