CN1718793A - Fusing agent used under high temperature fused state - Google Patents
Fusing agent used under high temperature fused state Download PDFInfo
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- CN1718793A CN1718793A CN 200510050670 CN200510050670A CN1718793A CN 1718793 A CN1718793 A CN 1718793A CN 200510050670 CN200510050670 CN 200510050670 CN 200510050670 A CN200510050670 A CN 200510050670A CN 1718793 A CN1718793 A CN 1718793A
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Abstract
A flux used in high-temp molten state for treating the electroplating sludge is prepared from main flux (32.5-92.5 wt.%) chosen from lizardite, lime rock, dolomite and quartzite, and diluent (7.5-67.5 wt.%). It has high fluxing, diluting and slag-making effect.
Description
Technical field
The present invention relates to a kind of flux that is used under the high temperature fused state, in particular, the present invention relates to a kind of flux that is used under the high temperature fused state, it can be widely used in fields such as electroplating sludge processing, metallurgy, described flux under the condition of high temperature, have good flux, function such as dilution, slag making.
Background technology
In field of metallurgy some material is mixed in the ore, can make ore also fusing under lower temperature, be called as flux.Flux mainly solves low melting point in the smelting slag making process and the needs of desulfurization under the condition of high temperature, fuel mainly is to improve the sinter bed temperature, guarantees to have certain amount of liquid phase and keeps necessary sinter strength.Flux is added sintering deposit compared following two advantages with direct adding blast furnace: the one, flux can be uniformly distributed in the furnace charge, improves the uniformity that slag forms mutually; The 2nd, reduce valuable metallurgical coke consumption in the stove, reduce simultaneously the CO in the furnace reduction gas
2Content has improved indirect reduction speed, reduces again the coal gas amount, has reduced the fine ore loss that coal gas is taken out of.
This patent application provides a kind of converter slag-making fluxing agent and uses the slagging process of this flux such as Chinese patent application (99113322.6), and this flux is formed red bauxite by having following ingredients: Al
2O
3〉=45%, SiO
2≤ 30%, Fe
2O
37～18%, surplus is CaO, MgO, TiO
2, the impurity such as P, S, this siderotil granularity of soil is 5～30mm, use amount depends on institute's steelmaking kind and silicon content of hot metal, its scope is 1.6～9kg red bauxite/ton steel.Though helping of the flux slag that this patent application is related, desulfurization, furnace retaining, functions such as cost is low, but have individual transitional region to be the plasticity humidity province in the liquid because alloy is become by solid in smelting process, alloy is easy to generate the dross phenomenon in this humidity province, causes the alloy of stove to export and the slag making mouth stops up easily, cause furnace life to shorten, increase the cost of smelting.
And electric plating sludge resource, harmless treatment is eliminated it to second environmental pollution, is the emphasis of environmental scientific research for a long time, once repeatedly lists state key project financing in.The technological line that adopts mainly contains: sour molten-chemical method separates polycomponent; Ammonia soaks-organic solvent extraction separation polycomponent; Chemical separation-organic solvent extraction separation-electrochemistry is separated the separation polycomponent that combines; Microbially decontaminate processing etc., but always because processing cost is too high, heavy losses can not long-time running production, stops production or change the line of production.
Summary of the invention
The present invention is on the basis that absorbs domestic and international modern technique, the successful experience of comprehensive relevant pyrometallurgy both at home and abroad and hydrometallurgy aspect, a kind of flux that is used under the high temperature fused state is provided, flux involved in the present invention has the plasticity humidity province of shortening material, reduces the temperature of fusion of smelting or pyroprocessing electroplating sludge.
The object of the present invention is achieved like this: a kind of flux that is used under the high temperature fused state, its component and content are by weight: main flux: 32.5%～92.5%; Thinner: 7.5%～67.5%, wherein said main flux is one or more combinations in serpentine, Wingdale, rhombspar, the quartzite.
Adopt the habitual flux batching of metallurgical system, the plasticity humidity province is arranged in the liquid conversion process at solid.When temperature was in this humidity province, the slag of generation was thick, and is mobile relatively poor, if the untimely liquid that is translated into usually can cause dross and cupola well accumulation in the stove, causes smelting furnace to be difficult to work normally.Those of ordinary skill usually may expect adopting high temperature to become the method for liquid fast by slag, handle the plasticity humidity province of slag, the too high corrosion that not only causes the refractory materials of smelting furnace of temperature heating, impel impurity reductive metal product, alloy mass descends, and the investment that has strengthened production cost, practicality is relatively poor.
The inventor is by the discovery that studies for a long period of time: main solvent and be aided with thinner in addition in batching, and wherein solvent has played the effect of fluxing, and thinner plays the effect of dilution, solved the slag thickness, dross in the stove, material is difficult to descending, the stove order is extremely short, the problem of frequent dead stove.
In above-mentioned solvent, serpentine is the product that peridotites, the pyroxene in the ultrabasic rocks formed by the katathermal solution explanation, and rhombspar also can form serpentine through hydrothermal metasomatism.Thereby serpentine mineral deposit (being mainly chrysotile) can be divided into serpentine by genetic type of ore deposit and can be divided into according to its purposes difference in industry: 1. 2. calcium magnesium phosphate processed is made smelting flux with the serpentine mineral deposit and is 3. made the sintering furnace slag former with serpentine mineral deposit 4. construction material and handicraft with the serpentine mineral deposit, make slag former with the serpentine mineral deposit, can improve significantly the flowability of slag, also can be so that the material in the stove has preferably Structural Tectonics feature and mechanical strength.
Wingdale can react with acidic substance, can dissociate metal oxide out in the processing of smelting or electroplating sludge, is easy to reduction.
Rhombspar mainly is used as flux, refractory materials, extracting metals magnesium and magnesium compound in metallurgical industry.Smelting or electroplating sludge is processed as flux, in can plaing a part and acid slag, improving the activity of silica in the basicity, reduction slag of slag, to alleviate slag to the corrosion function of furnace lining; Dolomite can also improve the flowability of slag, makes slag former and uses, and not only can prolong the life-span of converter, improves the flowability of slag, and the carrying out that can improve desulfurization, dephosphorisation reaction, and also can save great amount of cost.Rhombspar also can dilute slag, reduces slag melting, reduces the consumption of fuel, improves alloy mass.
Quartz mainly contains element silicon, can reduce the material fusing point, belongs to acid flux material, so when mud is alkalescence, can also play the effect of adjusting.
At the above-mentioned solvent that is used under the high temperature fused state, the flux under the described high temperature fused state, the optimization content of its component is by weight: main flux: 37.5%～87.5% thinner: 12.5%～62.5%.Wherein said main flux is one or more combinations in serpentine, Wingdale, rhombspar, the quartzite.Adopting the mass percent of this optimization, is to a kind of better optimization of the present invention and restriction.
At the above-mentioned solvent that is used under the high temperature fused state, the composition of described serpentine is MgO:30.35%～40.35%, SiO by weight
2: 35.92%～40.92%, Ni:0.1～0.44%, Fe
2O
3: 8.0～12.0%, Al
2O
3: 1.69%～2.19%, Cr:0.15%～0.25%, the vector that burns are 12.3%～16.3%.
At the above-mentioned solvent that is used under the high temperature fused state, the constituent of described lime stone is CaO:49%～53%, MgO:1.5%～2.5%, SiO by weight
2: 1.5%～2.5%, Fe
2O
3: 1.2%～1.6%, Al
2O
3: 0.4%～0.6%, bright vector is 41%～45%.
At the above-mentioned solvent that is used under the high temperature fused state, described dolomite constituent be CaO:30.3～34.3%, MgO:16.7～22.7%, SiO by weight
2: 0.83～1.43%, Fe
2O
3: 0.22%～0.62%, Al
2O
3: 0.12%～0.52%, bright vector is 42.13%～50.13%.
At the above-mentioned solvent that is used under the high temperature fused state, the constituent of described quartz is CaO:0.04%～0.08%, MgO:0.32～0.40%, SiO by weight
2: 97.5%～98%, Fe
2O
3: 0.57%～0.97%, Al
2O
3: 0.7%～1.10%, bright vector is 0.19%～0.25%.
At the above-mentioned flux that is used under the high temperature fused state, described diluent is grain slag, wherein grain slag is blast furnace slag, after the water extraction, become grains of sand shape after the water Quench and be grain slag, the constituent of wherein said grain slag is CaO:35%～50%, MgO:2%～15%, SiO by weight
2: 25%～50%, Fe
2O
3: 0.1%～1.5%, Al
2O
3: 3～20%, MnO:0.1%～1.5%, S:0.5%～2%.
At the above-mentioned flux that is used under the high temperature fused state, the optimization constituent of described grain slag is CaO:38%～44%, MgO:3%～11%, SiO by weight
2: 32%～42%, Fe
2O
3: 0.5%～1.0%, Al
2O
3: 6～17%, MnO:0.3%～1.0%, S:0.5%～1.5%.
Grain slag mainly plays the effect of dilution in metallurgical and electroplating sludge are handled, such as mainly is the percentage composition that reduces chromium in the mud in electroplating sludge is handled.When being lower than 10%, chromium content generally do not need to add grain slag; When the content of chromium greater than 14%, then need to add grain slag.The flowability of mud can improve greatly after the adding grain slag, is conducive to the slagging of mud, reduces fusing point, improves the life-span of furnace.
Therefore adopt the present invention to adopt one or more main flux through repetition test repeatedly, and be aided with thinner, carry out charge calculation by batching parameter span of control, solved the slag thickness, dross in the stove, material is difficult to descending, the stove order is extremely short, the problem of frequent dead stove, and increase substantially the rate of recovery of smelting efficient or electroplating sludge interalloy, can guarantee smelting furnace production steady in a long-term.
Embodiment
Below be the specific embodiment of the present invention, technical characterictic of the present invention is described further, but the present invention is not limited to these embodiment.
Weight percent proportioning by following tabulation takes by weighing flux
Table 1: the weight percent of embodiment 1～embodiment 5 each component
Wherein the composition of serpentine is MgO by weight among the embodiment 1
30.35%, SiO
240.92%, Ni 0.44%, Fe
2O
312.0%, Al
2O
31.69%, Cr 0.25%, the vector that burns are 14.35%; The constituent of lime stone is CaO 49%, MgO 2.5%, SiO by weight
21.5%, Fe
2O
31.6%, Al
2O
30.4%, bright vector is 45%; The constituent of grain slag is CaO:35%, MgO:15%, SiO by weight
2: 30%, Fe
2O
3: 1.5%, Al
2O
3: 15%, MnO:1.5%, S:2%.
The composition of serpentine is MgO 32.35%, SiO by weight among the embodiment 2
238.92%, Ni 0.34%, Fe
2O
311.0%, Al
2O
32.09%, Cr 0.20%, the vector that burns are 15.10%; The constituent of lime stone is CaO 50%, MgO 2.0%, SiO 22.0%, Fe by weight
2O
31.4%, Al
2O
30.5%, bright vector is 44.1%; Dolomite constituent be CaO 30.3%, MgO by weight
22.7%, SiO
20.83%, Fe
2O
30.62%, Al
2O
30.12%, bright vector is 44.81%; The constituent of quartz is CaO 0.04%, MgO 0.40%, SiO by weight
297.5%, Fe
2O
30.97%, Al
2O
30.7%, bright vector is 0.38%.The constituent of grain slag is CaO:38%, MgO:11%, SiO
2: 32%, Fe
2O
3: 0.5%, Al
2O
3: 17%, MnO:0.3%, S:1.2%.
The composition of serpentine is MgO 35.35%, SiO by weight among the embodiment 3
237.92%, Ni 0.24%, Fe
2O
310.0%, Al
2O
31.99%, Cr 0.20%, the vector that burns are 14.30%; The constituent of lime stone is CaO 51%, MgO 2.0%, SiO by weight
22.0%, Fe
2O
31.4%, Al
2O
30.6%, bright vector is 43%; Dolomite constituent be CaO 32.3%, MgO 19.7%, SiO 21.13%, Fe by weight
2O
30.42%, Al
2O
30.32%, bright vector is 46.13%; The constituent of quartz is CaO 0.06%, MgO 0.36%, SiO by weight
297.7%, Fe
2O
30.77%, Al
2O
30.9%, bright vector is 0.21%; The constituent of grain slag is CaO 40%, MgO 8%, SiO
236%, Fe
2O
30.6%, Al
2O
314%, MnO 0.8%, S 0.6%.
The composition of serpentine is MgO 38.35%, SiO by weight among the embodiment 4
236.92%, Ni 0.24%, Fe
2O
39.0%, Al
2O
32.09%, Cr 0.20%, the vector that burns are 13.20%; The constituent of lime stone is CaO 52%, MgO 1.5%, SiO by weight
22.5%, Fe
2O
31.6%, Al
2O
30.4%, bright vector is 42%; Dolomite constituent be CaO 31.3%, MgO 21.7%, SiO by weight
20.83%, Fe
2O
30.52%, Al
2O
30.22%, bright vector is 45.43%; The constituent of quartz is CaO:0.08%, MgO:0.32%, SiO by weight
297.8%, Fe
2O
30.87%, Al
2O
30.7%, bright vector is 0.23%; The constituent of grain slag is CaO:44%, MgO:5%, SiO
2: 42%, Fe
2O
3: 0.6%, Al
2O
3: 6%, MnO:1.0%, S:1.4%.
The composition of serpentine is MgO 40.35%, SiO by weight among the embodiment 5
235.92%, Ni 0.10%, Fe
2O
38.0%, Al
2O
32.19%, Cr 0.15%, the vector that burns are 13.29%; The constituent of lime stone is CaO 51%, MgO 1.5%, SiO 22.5%, Fe by weight
2O
31.2%, Al
2O
30.4%, bright vector is 43.4%; Dolomite constituent be CaO 34.3%, MgO 16.7%, SiO by weight
21.43%, Fe
2O
30.22%, Al
2O
30.52%, bright vector is 46.83%; The constituent of quartz is CaO 0.08%, MgO 0.32%, SiO by weight
298%, Fe
2O
30.57%, Al
2O
30.8%, bright vector is 0.23%.The constituent of grain slag is CaO 50%, MgO 2%, SiO
228%, Fe
2O
30.3%, Al
2O
318%, MnO:0.1%, S:1.6%.
Below by Application Example beneficial effect of the present invention is further elaborated, mainly be the application that electroplating sludge is processed.
Application Example 1
The moiety of electroplating sludge: Cr (OH) 34.78%, Cu (OH)
20.45%, Zn (OH) 21.07%, Ni (OH) 20.56%, Fe (OH)
22.15%, moisture is 87.6%, and other impurity are 3.39%, by the cylinder drying machine drying, makes its moisture be reduced to 40%～45% in above-mentioned mud, takes by weighing 1 ton; Take by weighing 0.5 ton coke, the flux in 0.3 ton of embodiment, 1 batching rises to charging scffold by lift through metering is weighed after, after stirring, evenly is added in the smelting furnace by charging door, and the interior material post height of stove is 3 meters, material after drying, solid content is 95%.After preheating under 1200 ℃ the hot conditions, solid materials begins to soften, carry out decomposition, originally the oxyhydroxide in the material becomes oxide compound, the speed of air with 10 meter per seconds is blasted in the smelting furnace by blower fan, under 1600 ℃ of melt temperatures, material becomes liquid in the stove, and wherein oxide compound is by (CO/CO
2) reducing atmosphere or coke be reduced to alloy, or and solvent in Si, Mg, reaction generate slag.Wherein because the density of alloy is bigger, so emit from the alloy mouth of smelting furnace bottom, the density of slag is less, emits from the cinder notch on top.
Application Example 2
The moiety of electroplating sludge: Cr (OH) 37.18%, Cu (OH)
20.67%, Zn (OH) 20.71%, Ni (OH) 20.37%, Fe (OH)
21.43%, moisture is 87.38%, and other impurity are 2.26%, by the cylinder drying machine drying, makes its moisture be reduced to 40%～45% in above-mentioned mud, takes by weighing 1 ton; Take by weighing 0.88 ton coke, the flux during 0.3 ton of embodiment 5 prepares burden, 0.25 ton grain slag, after metering is weighed, rise to charging scffold, after stirring, evenly be added in the smelting furnace by charging door by lift, material post height is 3 meters in the stove, material after drying, solid content is 93%.After preheating under 1000 ℃ the hot conditions, solid materials begins to soften, carry out decomposition, originally the oxyhydroxide in the material becomes oxide compound, the speed of air with 15 meter per seconds is blasted in the smelting furnace by blower fan, under 1400 ℃ of melt temperatures, material becomes liquid in the stove, and wherein oxide compound is by (CO/CO
2) reducing atmosphere or coke be reduced to alloy, or and solvent in Si, Mg reaction generate slag.Wherein because the density of alloy is bigger, so emit from the alloy mouth of smelting furnace bottom, the density of slag is less, emits from the cinder notch on top.
Application Example 3
The moiety of electroplating sludge: Cr (OH) 36.21%, Cu (OH)
20.55%, Zn (OH) 20.86%, Ni (OH) 20.42%, Fe (OH)
21.89%, moisture is 87.21%, and other impurity are 2.86%, by the cylinder drying machine drying, makes its moisture be reduced to 40%～45% in above-mentioned mud, takes by weighing 1 ton; Take by weighing 0.7 ton coke, the flux in 0.5 ton of embodiment, 3 batchings rises to charging scffold by lift through metering is weighed after, after stirring, evenly is added in the smelting furnace by charging door, and the interior material post height of stove is 3 meters, material after drying, solid content is 92%.After preheating under 1100 ℃ the hot conditions, solid materials begins to soften, carry out decomposition, originally the oxyhydroxide in the material becomes oxide compound, the speed of air with 15 meter per seconds is blasted in the smelting furnace by blower fan, under 1500 ℃ of melt temperatures, material becomes liquid in the stove, and wherein oxide compound is by (CO/CO
2) reducing atmosphere or coke be reduced to alloy, or and solvent in Si, Mg, reaction generate slag.Wherein because the density of alloy is bigger, so emit from the alloy mouth of smelting furnace bottom, the density of slag is less, emits from the cinder notch on top.
Contrast Application Example 1
The moiety of electroplating sludge: Cr (OH)
34.78%, Cu (OH)
20.45%, Zn (OH) 21.07%, Ni (OH) 20.56%, Fe (OH)
22.15%, moisture is 87.6%, and other impurity are 3.39%.By the cylinder drying machine drying, make its moisture be reduced to 40%～45% in above-mentioned mud, take by weighing 1 ton; Take by weighing 0.7 ton coke, rise to charging scffold by lift after metering is weighed, after stirring, evenly be added in the smelting furnace by charging door, material post height is 3 meters in the stove, material after drying, solid content is 92%.After preheating under 1100 ℃ the hot conditions, solid materials begins to soften, carry out decomposition, originally the oxyhydroxide in the material becomes oxide compound, the speed of air with 15 meter per seconds is blasted in the smelting furnace by blower fan, under 1500 ℃ of melt temperatures, material becomes liquid in the stove, and wherein oxide compound is by (CO/CO
2) reducing atmosphere or coke be reduced to alloy, or and solvent in Si, Mg, reaction generate slag.Wherein because the density of alloy is bigger, so emit from the alloy mouth of smelting furnace bottom, the density of slag is less, emits from the cinder notch on top.
Table 2: Application Example 1～2 and contrast Application Example and the relation between furnace life
| The specific embodiment | Furnace life | Analysis result |
| Application Example 1 | 252 hours | Nos dross phenomenon in the stove, material are descending smooth |
| Application Example 2 | 236 hours | Nos dross phenomenon in the stove, material are descending smooth |
| Application Example 3 | 298 hours | Nos dross phenomenon in the stove, material are descending smooth |
| Contrast Application Example 1 | 16 hours | Dross phenomenon, feed blocking discharging opening take place in the stove |
As can be seen from Table 2, after the invention provides solvent and being applied to electroplating sludge and handling, no dross phenomenon in its stove, material are descending smooth, have obvious superiority.
Specific embodiment described in the present invention only is that the present invention's spirit is illustrated.
Those skilled in the art can make various modifications or replenish or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (9)
1, a kind of flux that is used under the high temperature fused state is characterized in that, the component of this flux and content are by weight: main flux: 32.5%～92.5%; Thinner: 7.5%～67.5%, wherein said main flux is one or more combinations in serpentine, Wingdale, rhombspar, the quartzite.
2, a kind of flux that is used under the high temperature fused state according to claim 1 is characterized in that the component of this flux and content are by weight: main flux: 37.5%～87.5%; Thinner: 12.5%～62.5%, wherein said main flux is one or more combinations in serpentine, Wingdale, rhombspar, the quartzite.
3, according to claim 1 and 2ly a kind ofly it is characterized in that for the flux under the high temperature fused state composition of described serpentine is MgO:30.35%～40.35%, SiO by weight
2: 35.92%～40.92%, Ni:0.1～0.44%, Fe
2O
3: 8.0～12.0%, Al
2O
3: 1.69%～2.19%, Cr:0.15%～0.25%, the vector that burns are 12.3%～16.3%.
4, according to claim 1 and 2ly a kind ofly it is characterized in that for the flux under the high temperature fused state constituent of described lime stone is CaO:49%～53%, MgO:1.5%～2.5%, SiO by weight
2: 1.5%～2.5%, Fe
2O
3: 1.2%～1.6%, Al
2O
3: 0.4%～0.6%, bright vector is 41%～45%.
5, according to claim 1 and 2 a kind ofly it is characterized in that for the flux under the high temperature fused state, described dolomite constituent be CaO:30.3～34.3%, MgO:16.7～22.7%, SiO by weight
2: 0.83～1.43%, Fe
2O
3: 0.22%～0.62%, Al
2O
3: 0.12%～0.52%, bright vector is 42.13%～50.13%.
6, according to claim 1 and 2ly a kind ofly it is characterized in that for the flux under the high temperature fused state constituent of described quartz is CaO:0.04%～0.08%, MgO:0.32～0.40%, SiO by weight
2: 97.5%～98%, Fe
2O
3: 0.57%～0.97%, Al
2O
3: 0.7%～1.10%, bright vector is 0.19%～0.25%.
7, a kind of flux that is used under the high temperature fused state according to claim 1 and 2 is characterized in that, described thinner is a grain slag.
8, according to claim 7ly a kind ofly it is characterized in that for the flux under the high temperature fused state constituent of described grain slag is CaO:35%～50%, MgO:2%～15%, SiO by weight
2: 25%～50%, Fe
2O
3: 0.1%～1.5%, Al
2O
3: 3～20%, MnO:0.1%～1.5%, S:0.5%～2%.
9, according to claim 8ly a kind ofly it is characterized in that for the flux under the high temperature fused state constituent of described grain slag is CaO:38%～44%, MgO:3%～11%, SiO by weight
2: 32%～42%, Fe
2O
3: 0.5%～1.0%, Al
2O
3: 6～17%, MnO:0.3%～1.0%, S:0.5%～1.5%.
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|---|---|---|---|
| CNB2005100506705A CN100436618C (en) | 2005-07-11 | 2005-07-11 | Fusing agent used under high temperature fused state |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388043A (en) * | 2013-07-23 | 2013-11-13 | 山东莱钢永锋钢铁有限公司 | A converter low-silicon smelting method |
| CN113145615A (en) * | 2021-04-23 | 2021-07-23 | 中国恩菲工程技术有限公司 | Method and apparatus for treating waste residue containing fluorine and phosphorus |
| CN113832302A (en) * | 2021-09-30 | 2021-12-24 | 西南科技大学 | Metallurgical fluxing agent for chrysotile mine serpentine stripping waste rock and preparation method thereof |
| CN115491491A (en) * | 2022-09-07 | 2022-12-20 | 金川集团股份有限公司 | Mixed flux batching method for metallurgical furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3288592A (en) * | 1963-01-16 | 1966-11-29 | Pfizer & Co C | Process for reducing deterioration in equipment handling molten materials |
| CN1088112C (en) * | 1999-10-08 | 2002-07-24 | 鞍山钢铁集团公司 | Flux and process for forming slag of converter |
| CN1157486C (en) * | 2002-01-17 | 2004-07-14 | 刘跃 | SYnthetic slag for reducing oxygen and sulfur content in molten steel and its slag making method |
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2005
- 2005-07-11 CN CNB2005100506705A patent/CN100436618C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388043A (en) * | 2013-07-23 | 2013-11-13 | 山东莱钢永锋钢铁有限公司 | A converter low-silicon smelting method |
| CN103388043B (en) * | 2013-07-23 | 2016-09-07 | 山东莱钢永锋钢铁有限公司 | Converter low silicon smelting method |
| CN113145615A (en) * | 2021-04-23 | 2021-07-23 | 中国恩菲工程技术有限公司 | Method and apparatus for treating waste residue containing fluorine and phosphorus |
| CN113832302A (en) * | 2021-09-30 | 2021-12-24 | 西南科技大学 | Metallurgical fluxing agent for chrysotile mine serpentine stripping waste rock and preparation method thereof |
| CN113832302B (en) * | 2021-09-30 | 2023-01-17 | 西南科技大学 | Metallurgical fluxing agent for chrysotile mine serpentine stripping waste rock and preparation method thereof |
| CN115491491A (en) * | 2022-09-07 | 2022-12-20 | 金川集团股份有限公司 | Mixed flux batching method for metallurgical furnace |
| CN115491491B (en) * | 2022-09-07 | 2023-11-17 | 金川集团股份有限公司 | Mixed flux batching method for metallurgical furnace |
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| CN100436618C (en) | 2008-11-26 |
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