CN104152707A - Method for smelting ferro-molybdenum from ammonia leaching residue to recover molybdenum - Google Patents
Method for smelting ferro-molybdenum from ammonia leaching residue to recover molybdenum Download PDFInfo
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Abstract
The invention discloses a method for smelting ferro-molybdenum from ammonia leaching residue to recover molybdenum. The method comprises the following steps: 1, the ammonia leaching residue and an auxiliary material are added into a mixer to be mixed uniformly to obtain a mixture, wherein the auxiliary material comprises ferro-silicon, ferro-phosphorus, aluminum particles, sodium nitrate and a fluxing agent, and the fluxing agent adopts calcium oxide or fluorite; 2, the mixture is loaded in a smelting furnace, the surface of the mixture is covered with a layer of firelighter, and a reaction product is obtained after ignition for smelting; the reaction product stands still so that iron is precipitated to form smelting residue and a ferro-molybdenum ingot, the smelting residue is removed, the ferro-molybdenum ingot cools naturally to be solidified, and the purpose of smelting ferro-molybdenum from the ammonia leaching residue to recover molybdenum is achieved. According to the method provided by the invention, the ammonia leaching residue is mixed with the smelting auxiliary material on the basis of a silicon-aluminium thermal reduction method, and the smelting residue and the ferro-molybdenum ingot are produced by a ferro-alloy self-heating reaction technique, so that the effect of recycling molybdenum metal is achieved; when used for smelting ferro-molybdenum to recover molybdenum in ammonia leaching residue, the method has the advantages of high resource utilization rate, low smelting auxiliary material consumption, small environmental pollution and high metal recovery rate.
Description
Technical field
The invention belongs to molybdenum metallurgical technology technical field, be specifically related to a kind of method of ammonia leaching residue Smelting Ferromolybdenum recovery molybdenum.
Background technology
Molybdenum is a kind of rare metal resources, molybdenum in China Chemicals production capacity during " 12 " according to statistics: ammonium molybdate production capacity is to reach 60000t/a, Sodium orthomolybdate production capacity is more than 6500t/a, so need to be more than about 73000t/a for the production of the standard calcining molybdenum concentrate of molybdenum Chemicals, according to the slag rate 8%～18% of normal production molybdenum Chemicals, the molybdenum grade of the slag that produces is calculated with 5%～10%, and the molybdenum amount of being so often only these ammonia leaching residues is about 292t～1314t.At present, many production of molybdic ammoniums producer does not reclaim the molybdenum resource in ammonia leaching residue, or have the producer of partially recycled ammonia leaching residue, its production technique exist energy consumption large, pollute the defect large, resource recovery is low.
At present, there are soda roasting water seaoning, acid to decompose the techniques such as extraction process, sodium carbonate wet extraction method, hyperbaric oxygen acid (alkali) leaching taking ammonia leaching residue as the technique of raw materials recovery molybdenum resource.Soda roasting water seaoning and sodium carbonate wet extraction method adaptability are better, metal recovery rate is higher, but this method technique is comparatively loaded down with trivial details, be that ammonia leaching residue need pass through the operations such as oven dry, pulverizing, fine grinding, batching, roasting, leaching, energy consumption is large in addition, facility investment is high, operates not easy and easily produces secondary pollution.Acid is decomposed extraction process to not oxidation the or molybdenum of complete oxidation is not inoperative in ammonia leaching residue, and acid corrosion is serious, and operating environment is poor, contaminate environment.Hyperbaric oxygen acid (alkali) leaching method is high to equipment requirements, and at present in process of experimental, its technico-economical comparison and result are still unstable.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, provides a kind of ammonia leaching residue Smelting Ferromolybdenum to reclaim the method for molybdenum.The method is utilized sial hot reducing method, in ammonia leaching residue, allocate smelting auxiliary material into, adopt iron alloy autothermal reaction technique, output smelting slag and molybdenum-iron ingot, reach the effect that reclaims molybdenum, utilize Smelting Ferromolybdenum of the present invention to reclaim the molybdenum in ammonia leaching residue, there is resource utilization high, smelting supplementary product onsumption is few, and environmental pollution is little, the advantage that metal recovery rate is high, the method is applied to molybdenum field of metallurgy, can realize molybdenum resource high-efficiency and recycle, reduce gas, solid pollute of ammonia leaching residue to environment, significantly promote the molybdenum Metallurgical resources comprehensive utilization process of China.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of ammonia leaching residue Smelting Ferromolybdenum reclaims the method for molybdenum, it is characterized in that, the method comprises the following steps:
Step 1, ammonia leaching residue and auxiliary material are added in mixer and mixed, obtain mixture; Described auxiliary material is made up of ferrosilicon, iron phosphorus, aluminum shot, SODIUMNITRATE and flux, wherein the quality of ferrosilicon is 28%～31% of ammonia leaching residue quality, the quality of iron phosphorus is 29%～36% of ammonia leaching residue quality, the quality of aluminum shot is 5%～8% of ammonia leaching residue quality, and the quality of SODIUMNITRATE is 18%～26% of ammonia leaching residue quality; Described flux is calcium oxide or fluorite, and in the time that described flux is calcium oxide, the quality of flux is 6%～8% of ammonia leaching residue quality, and in the time that described flux is fluorite, the quality of flux is 5.5%～7.5% of ammonia leaching residue quality; In described ammonia leaching residue, the quality percentage composition of molybdenum is 5%～20%;
Step 2, mixture described in step 1 is packed in smelting furnace, at mixture surface coverage one deck starting mix, igniting obtains reactant after smelting 5min～10min; Described starting mix is 1:(1～1.5 by mass ratio) aluminum shot and SODIUMNITRATE be mixed;
Step 3, reactant described in step 2 is left standstill after heavy iron 20min～40min, form smelting slag and molybdenum-iron ingot, discharge smelting slag, molybdenum-iron ingot is naturally cooled to and solidify, realize ammonia leaching residue Smelting Ferromolybdenum and reclaim molybdenum.
Above-mentioned a kind of ammonia leaching residue Smelting Ferromolybdenum reclaims the method for molybdenum, it is characterized in that, the quality of ferrosilicon described in step 1 is 29.3% of ammonia leaching residue quality, the quality of iron phosphorus is 34.6% of ammonia leaching residue quality, the quality of aluminum shot is 6.9% of ammonia leaching residue quality, and the quality of SODIUMNITRATE is 22.3% of ammonia leaching residue quality;
Above-mentioned a kind of ammonia leaching residue Smelting Ferromolybdenum reclaims the method for molybdenum, it is characterized in that, the mean particle size of ammonia leaching residue described in step 1 is not more than 5mm.
Above-mentioned a kind of ammonia leaching residue Smelting Ferromolybdenum reclaims the method for molybdenum, it is characterized in that, the quality percentage composition of Silicon in Ferrosilicon described in step 1 is 72%～76%, and in iron phosphorus, the quality percentage composition of iron is 64%～68%.
Above-mentioned a kind of ammonia leaching residue Smelting Ferromolybdenum reclaims the method for molybdenum, it is characterized in that, described in step 1, in aluminum shot, the quality percentage composition of aluminium is 95%～98%.
Above-mentioned a kind of ammonia leaching residue Smelting Ferromolybdenum reclaims the method for molybdenum, it is characterized in that, the quality purity of SODIUMNITRATE described in step 1 is 95%～98%.
Above-mentioned a kind of ammonia leaching residue Smelting Ferromolybdenum reclaims the method for molybdenum, it is characterized in that, the quality purity of calcium oxide described in step 1 is not less than 85%.
Above-mentioned a kind of ammonia leaching residue Smelting Ferromolybdenum reclaims the method for molybdenum, it is characterized in that, described in step 1, in fluorite, the quality percentage composition of Calcium Fluoride (Fluorspan) is not less than 90%.
Above-mentioned a kind of ammonia leaching residue Smelting Ferromolybdenum reclaims the method for molybdenum, it is characterized in that, the consumption of starting mix described in step 2 is 0.3%～0.6% of mixture quality.
The present invention compared with prior art has the following advantages:
1, the present invention utilizes sial hot reducing method, in ammonia leaching residue, allocate smelting auxiliary material into, adopt iron alloy autothermal reaction technique, output smelting slag and molybdenum-iron ingot, reach the effect that reclaims molybdenum, utilize Smelting Ferromolybdenum of the present invention to reclaim the molybdenum in ammonia leaching residue, there is resource utilization high, smelting supplementary product onsumption is few, and environmental pollution is little, the advantage that metal recovery rate is high, the method is applied to molybdenum field of metallurgy, can realize molybdenum resource high-efficiency and recycle, reduce gas, solid pollute of ammonia leaching residue to environment, significantly promote the molybdenum Metallurgical resources comprehensive utilization process of China.
2, traditional molybdenum-iron smelting technology is to calculate batching reaction heat according to the grade of primary industry molybdenum oxide (molybdenum content 45%～60%), carry out again metallurgy proportioning calculating, by metallurgical supplementary material check the weight proportioning and batch mixing, after packing smelting furnace into, igniting is smelted, and the reaction heat of its smelting process is mainly the reduction heat release that comes from industrial molybdenum oxide; And in method of the present invention, molybdenum content in raw material ammonia leaching residue only has 5%～20%, wherein molybdenum oxide content is lower, be generally 2%～3.6%, the batching reaction heat calculating according to molybdenum grade cannot reach the calorific value that smelting needs at all, so be that ammonia leaching residue is used as to the cold burden meter that does not produce redox heat release in blending process of the present invention, charge calculation reaction heat is mainly derived from aluminum shot, ferrosilicon, iron phosphorus and four kinds of auxiliary materials of SODIUMNITRATE, smelt the supplementary material that institute heat requirement all relies on filling, heat supply and benefit are added material more not need the external world.
3, method of the present invention is under the condition of oxidation-reduction smelting, molybdenum in ammonia leaching residue is proceeded in molybdenum-iron ingot, and make the impurity such as most of iron and silicon enter slag phase, realize slag, iron separates, reach the object that reclaims molybdenum resource, in addition, the present invention passes through supplementary material granularity, the parameter research experiment of quality and technological process, feasible supplementary material batching mode and processing condition are preferably determined, obtain moulding on the one hand by method of the present invention good, the molybdenum-iron ingot that section is neat, obtain on the other hand the smelting slag that chocolate and surface have metalluster, it is little that this smelting slag has viscosity, valuable metal content is little, the feature that Harmful ingredient content is low.
Below by embodiment, technical scheme of the present invention is described in further detail.
Embodiment
Embodiment 1
The method that the present embodiment ammonia leaching residue Smelting Ferromolybdenum reclaims molybdenum comprises the following steps:
Step 1,1000kg ammonia leaching residue and auxiliary material are added in mixer and mixed, obtain mixture; Described auxiliary material is made up of 293kg ferrosilicon, 346kg iron phosphorus, 69kg aluminum shot, 223kg SODIUMNITRATE and 60kg calcium oxide; In described ammonia leaching residue, the quality percentage composition of molybdenum is 18%, and the mean particle size of ammonia leaching residue is not more than 5mm; The quality percentage composition of described Silicon in Ferrosilicon is 75%, and in iron phosphorus, the quality percentage composition of iron is 67%, and in aluminum shot, the quality percentage composition of aluminium is 98%, and the quality purity of SODIUMNITRATE is 98%, and the quality purity of calcium oxide is 85%;
Step 2, mixture described in step 1 is packed in smelting furnace, at mixture surface coverage one deck starting mix, igniting obtains reactant after smelting 10min; Aluminum shot and SODIUMNITRATE that described starting mix is 1:1.2 by mass ratio are mixed, and the consumption of starting mix is 5% of mixture quality;
Step 3, reactant described in step 2 is left standstill after heavy iron 30min, form smelting slag and molybdenum-iron ingot, discharge smelting slag, molybdenum-iron ingot is naturally cooled to and solidify, realize ammonia leaching residue Smelting Ferromolybdenum and reclaim molybdenum.
Step 4, by the ingot of molybdenum-iron described in step 3 successively through shrend, fragmentation, finishing, sample, check the weight and packaging process, prepare ferro-molybdenum.
The quality of the ferro-molybdenum of preparing in the present embodiment is 347kg, and the rate of recovery of molybdenum is 97.66%.
Embodiment 2
The method that the present embodiment ammonia leaching residue Smelting Ferromolybdenum reclaims molybdenum comprises the following steps:
Step 1,1000kg ammonia leaching residue and auxiliary material are added in mixer and mixed, obtain mixture; Described auxiliary material is made up of 280kg ferrosilicon, 360kg iron phosphorus, 50kg aluminum shot, 180kg SODIUMNITRATE and 80kg calcium oxide; In described ammonia leaching residue, the quality percentage composition of molybdenum is 10%, and the mean particle size of ammonia leaching residue is not more than 5mm; The quality percentage composition of described Silicon in Ferrosilicon is 76%, and in iron phosphorus, the quality percentage composition of iron is 68%, and in aluminum shot, the quality percentage composition of aluminium is 98%, and the quality purity of SODIUMNITRATE is 95%, and the quality purity of calcium oxide is 90%;
Step 2, mixture described in step 1 is packed in smelting furnace, at mixture surface coverage one deck starting mix, igniting obtains reactant after smelting 8min; Aluminum shot and SODIUMNITRATE that described starting mix is 1:1 by mass ratio are mixed, and the consumption of starting mix is 3% of mixture quality;
Step 3, reactant described in step 2 is left standstill after heavy iron 40min, form smelting slag and molybdenum-iron ingot, discharge smelting slag, molybdenum-iron ingot is naturally cooled to and solidify, realize ammonia leaching residue Smelting Ferromolybdenum and reclaim molybdenum.
Step 4, by the ingot of molybdenum-iron described in step 3 successively through shrend, fragmentation, finishing, sample, check the weight and packaging process, prepare ferro-molybdenum.
The quality of the ferro-molybdenum of preparing in the present embodiment is 208kg, and the rate of recovery of molybdenum is 97.07%.
Embodiment 3
The method that the present embodiment ammonia leaching residue Smelting Ferromolybdenum reclaims molybdenum comprises the following steps:
Step 1,1000kg ammonia leaching residue and auxiliary material are added in mixer and mixed, obtain mixture; Described auxiliary material is made up of 310kg ferrosilicon, 290kg iron phosphorus, 80kg aluminum shot, 260kg SODIUMNITRATE and 55kg fluorite; In described ammonia leaching residue, the quality percentage composition of molybdenum is 20%, and the mean particle size of ammonia leaching residue is not more than 5mm; The quality percentage composition of described Silicon in Ferrosilicon is 72%, and in iron phosphorus, the quality percentage composition of iron is 64%, and in aluminum shot, the quality percentage composition of aluminium is 95%, and the quality purity of SODIUMNITRATE is 96%, and in fluorite, the quality percentage composition of Calcium Fluoride (Fluorspan) is 90%;
Step 2, mixture described in step 1 is packed in smelting furnace, at mixture surface coverage one deck starting mix, igniting obtains reactant after smelting 5min; Aluminum shot and SODIUMNITRATE that described starting mix is 1:1.5 by mass ratio are mixed, and the consumption of starting mix is 4% of mixture quality;
Step 3, reactant described in step 2 is left standstill after heavy iron 35min, form smelting slag and molybdenum-iron ingot, discharge smelting slag, molybdenum-iron ingot is naturally cooled to and solidify, realize ammonia leaching residue Smelting Ferromolybdenum and reclaim molybdenum.
Step 4, by the ingot of molybdenum-iron described in step 3 successively through shrend, fragmentation, finishing, sample, check the weight and packaging process, prepare ferro-molybdenum.
The quality of the ferro-molybdenum of preparing in the present embodiment is 392kg, and the rate of recovery of molybdenum is 96.18%.
Embodiment 4
The method that the present embodiment ammonia leaching residue Smelting Ferromolybdenum reclaims molybdenum comprises the following steps:
Step 1,1000kg ammonia leaching residue and auxiliary material are added in mixer and mixed, obtain mixture; Described auxiliary material is made up of 300kg ferrosilicon, 330kg iron phosphorus, 60kg aluminum shot, 240kg SODIUMNITRATE and 75kg fluorite; In described ammonia leaching residue, the quality percentage composition of molybdenum is 5%, and the mean particle size of ammonia leaching residue is not more than 5mm; The quality percentage composition of described Silicon in Ferrosilicon is 73%, and in iron phosphorus, the quality percentage composition of iron is 65%, and in aluminum shot, the quality percentage composition of aluminium is 96%, and the quality purity of SODIUMNITRATE is 98%, and in fluorite, the quality percentage composition of Calcium Fluoride (Fluorspan) is 93%;
Step 2, mixture described in step 1 is packed in smelting furnace, at mixture surface coverage one deck starting mix, igniting obtains reactant after smelting 7min; Aluminum shot and SODIUMNITRATE that described starting mix is 1:1.5 by mass ratio are mixed, and the consumption of starting mix is 6% of mixture quality;
Step 3, reactant described in step 2 is left standstill after heavy iron 20min, form smelting slag and molybdenum-iron ingot, discharge smelting slag, molybdenum-iron ingot is naturally cooled to and solidify, realize ammonia leaching residue Smelting Ferromolybdenum and reclaim molybdenum.
Step 4, by the ingot of molybdenum-iron described in step 3 successively through shrend, fragmentation, finishing, sample, check the weight and packaging process, prepare ferro-molybdenum.
The quality of the ferro-molybdenum of preparing in the present embodiment is 122kg, and the rate of recovery of molybdenum is 96.48%.
Embodiment 5
The method that the present embodiment ammonia leaching residue Smelting Ferromolybdenum reclaims molybdenum comprises the following steps:
Step 1,1000kg ammonia leaching residue and auxiliary material are added in mixer and mixed, obtain mixture; Described auxiliary material is made up of 295kg ferrosilicon, 325kg iron phosphorus, 65kg aluminum shot, 220kg SODIUMNITRATE and 65kg fluorite; In described ammonia leaching residue, the quality percentage composition of molybdenum is 15%, and the mean particle size of ammonia leaching residue is not more than 5mm; The quality percentage composition of described Silicon in Ferrosilicon is 74%, and in iron phosphorus, the quality percentage composition of iron is 66%, and in aluminum shot, the quality percentage composition of aluminium is 96%, and the quality purity of SODIUMNITRATE is 96%, and in fluorite, the quality percentage composition of Calcium Fluoride (Fluorspan) is 95%;
Step 2, mixture described in step 1 is packed in smelting furnace, at mixture surface coverage one deck starting mix, igniting obtains reactant after smelting 9min; Aluminum shot and SODIUMNITRATE that described starting mix is 1:1.3 by mass ratio are mixed, and the consumption of starting mix is 5% of mixture quality;
Step 3, reactant described in step 2 is left standstill after heavy iron 25min, form smelting slag and molybdenum-iron ingot, discharge smelting slag, molybdenum-iron ingot is naturally cooled to and solidify, realize ammonia leaching residue Smelting Ferromolybdenum and reclaim molybdenum.
Step 4, by the ingot of molybdenum-iron described in step 3 successively through shrend, fragmentation, finishing, sample, check the weight and packaging process, prepare ferro-molybdenum.
The quality of the ferro-molybdenum of preparing in the present embodiment is 341kg, and the rate of recovery of molybdenum is 96.61%.
Embodiment 6
The method that the present embodiment ammonia leaching residue Smelting Ferromolybdenum reclaims molybdenum comprises the following steps:
Step 1,1000kg ammonia leaching residue and auxiliary material are added in mixer and mixed, obtain mixture; Described auxiliary material is made up of 295kg ferrosilicon, 325kg iron phosphorus, 65kg aluminum shot, 220kg SODIUMNITRATE and 70kg calcium oxide; In described ammonia leaching residue, the quality percentage composition of molybdenum is 13%, and the mean particle size of ammonia leaching residue is not more than 5mm; The quality percentage composition of described Silicon in Ferrosilicon is 74%, and in iron phosphorus, the quality percentage composition of iron is 66%, and in aluminum shot, the quality percentage composition of aluminium is 96%, and the quality purity of SODIUMNITRATE is 96%, and the quality purity of calcium oxide is 95%;
Step 2, mixture described in step 1 is packed in smelting furnace, at mixture surface coverage one deck starting mix, igniting obtains reactant after smelting 7min; Aluminum shot and SODIUMNITRATE that described starting mix is 1:1.2 by mass ratio are mixed, and the consumption of starting mix is 4.5% of mixture quality;
Step 3, reactant described in step 2 is left standstill after heavy iron 30min, form smelting slag and molybdenum-iron ingot, discharge smelting slag, molybdenum-iron ingot is naturally cooled to and solidify, realize ammonia leaching residue Smelting Ferromolybdenum and reclaim molybdenum.
Step 4, by the ingot of molybdenum-iron described in step 3 successively through shrend, fragmentation, finishing, sample, check the weight and packaging process, prepare ferro-molybdenum.
The quality of the ferro-molybdenum of preparing in the present embodiment is 287kg, and the rate of recovery of molybdenum is 96.12%.
Respectively the ferro-molybdenum of embodiment 1～6 preparation is carried out to product composition analysis, result is as table 1.
The product composition analytical results of the different ferro-molybdenums of table 1
The smelting slag respectively embodiment 1～6 being obtained carries out material phase analysis, and result is as table 2.
The material phase analysis result of the different smelting slags of table 2
Can find out from the analytical results of table 1 and table 2, embodiments of the invention are under the condition of oxidation-reduction smelting, by the parameter of supplementary material granularity, quality and technological process is optimized to control, the molybdenum in ammonia leaching residue is proceeded in molybdenum-iron ingot, and make the impurity such as most of iron and silicon enter slag phase, realize slag, iron separation, reach the object that reclaims molybdenum resource, there is resource utilization high, smelt supplementary product onsumption few, environmental pollution is little, the advantage that metal recovery rate is high.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every any simple modification of above embodiment being done according to the technology of the present invention essence, change and equivalent structure change, and all still belong in the protection domain of technical solution of the present invention.
Claims (9)
1. ammonia leaching residue Smelting Ferromolybdenum reclaims a method for molybdenum, it is characterized in that, the method comprises the following steps:
Step 1, ammonia leaching residue and auxiliary material are added in mixer and mixed, obtain mixture; Described auxiliary material is made up of ferrosilicon, iron phosphorus, aluminum shot, SODIUMNITRATE and flux, wherein the quality of ferrosilicon is 28%～31% of ammonia leaching residue quality, the quality of iron phosphorus is 29%～36% of ammonia leaching residue quality, the quality of aluminum shot is 5%～8% of ammonia leaching residue quality, and the quality of SODIUMNITRATE is 18%～26% of ammonia leaching residue quality; Described flux is calcium oxide or fluorite, and in the time that described flux is calcium oxide, the quality of flux is 6%～8% of ammonia leaching residue quality, and in the time that described flux is fluorite, the quality of flux is 5.5%～7.5% of ammonia leaching residue quality; In described ammonia leaching residue, the quality percentage composition of molybdenum is 5%～20%;
Step 2, mixture described in step 1 is packed in smelting furnace, at mixture surface coverage one deck starting mix, igniting obtains reactant after smelting 5min～10min; Described starting mix is 1:(1～1.5 by mass ratio) aluminum shot and SODIUMNITRATE be mixed;
Step 3, reactant described in step 2 is left standstill after heavy iron 20min～40min, form smelting slag and molybdenum-iron ingot, discharge smelting slag, molybdenum-iron ingot is naturally cooled to and solidify, realize ammonia leaching residue Smelting Ferromolybdenum and reclaim molybdenum.
2. reclaim the method for molybdenum according to a kind of ammonia leaching residue Smelting Ferromolybdenum claimed in claim 1, it is characterized in that, the quality of ferrosilicon described in step 1 is 29.3% of ammonia leaching residue quality, the quality of iron phosphorus is 34.6% of ammonia leaching residue quality, the quality of aluminum shot is 6.9% of ammonia leaching residue quality, and the quality of SODIUMNITRATE is 22.3% of ammonia leaching residue quality.
3. the method that reclaims molybdenum according to a kind of ammonia leaching residue Smelting Ferromolybdenum claimed in claim 1, is characterized in that, the mean particle size of ammonia leaching residue described in step 1 is not more than 5mm.
4. the method that reclaims molybdenum according to a kind of ammonia leaching residue Smelting Ferromolybdenum claimed in claim 1, is characterized in that, the quality percentage composition of Silicon in Ferrosilicon described in step 1 is 72%～76%, and in iron phosphorus, the quality percentage composition of iron is 64%～68%.
5. the method that reclaims molybdenum according to a kind of ammonia leaching residue Smelting Ferromolybdenum claimed in claim 1, is characterized in that, described in step 1, in aluminum shot, the quality percentage composition of aluminium is 95%～98%.
6. the method that reclaims molybdenum according to a kind of ammonia leaching residue Smelting Ferromolybdenum claimed in claim 1, is characterized in that, the quality purity of SODIUMNITRATE described in step 1 is 95%～98%.
7. the method that reclaims molybdenum according to a kind of ammonia leaching residue Smelting Ferromolybdenum claimed in claim 1, is characterized in that, the quality purity of calcium oxide described in step 1 is not less than 85%.
8. the method that reclaims molybdenum according to a kind of ammonia leaching residue Smelting Ferromolybdenum claimed in claim 1, is characterized in that, described in step 1, in fluorite, the quality percentage composition of Calcium Fluoride (Fluorspan) is not less than 90%.
9. the method that reclaims molybdenum according to a kind of ammonia leaching residue Smelting Ferromolybdenum claimed in claim 1, is characterized in that, the consumption of starting mix described in step 2 is 0.3%～0.6% of mixture quality.
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| CN104946891A (en) * | 2015-07-20 | 2015-09-30 | 西安建筑科技大学 | Method for recycling molybdenum by smelting ferro-molybdenum at low temperature |
| CN104975219A (en) * | 2015-05-29 | 2015-10-14 | 洛阳钼业集团金属材料有限公司 | Ferro-molybdenum smelting method based on effective oxygen content in roasted molybdenum concentrate |
| CN109055642A (en) * | 2018-08-27 | 2018-12-21 | 河北罗奇新材料科技有限公司 | Ferro-niobium, ferrotungsten, molybdenum-iron smelting process |
| CN110331329A (en) * | 2019-06-26 | 2019-10-15 | 金堆城钼业股份有限公司 | A kind of preparation method of Smelting High Speed Steel ferro-molybdenum |
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| CN114538516A (en) * | 2020-11-25 | 2022-05-27 | 中南大学 | Method for producing high-quality industrial molybdenum oxide through air draft self-heating roasting |
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| CN104975219A (en) * | 2015-05-29 | 2015-10-14 | 洛阳钼业集团金属材料有限公司 | Ferro-molybdenum smelting method based on effective oxygen content in roasted molybdenum concentrate |
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| CN114538516A (en) * | 2020-11-25 | 2022-05-27 | 中南大学 | Method for producing high-quality industrial molybdenum oxide through air draft self-heating roasting |
| CN114538516B (en) * | 2020-11-25 | 2023-10-20 | 中南大学 | Method for producing high-quality industrial molybdenum oxide by exhausting self-heating roasting |
| CN113265535A (en) * | 2021-05-14 | 2021-08-17 | 西安建筑科技大学 | Method for utilizing crystalline silicon cutting waste |
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