Background technology: contain scherbinaite colliery, carbon containing nickel-molybdenum ore and the high impurity ferro-molybdenum that obtained by the nickel-molybdenum ore melting is typical molybdenum-vanadium multi-metal metallurgy smelting materials, their common feature is that difficulty is selected difficult smelting.It is general 0.8~1% that the bone coal ore deposit contains vanadium, and it also contains valuable metals such as a spot of molybdenum nickel.Decomposing vanadous stone colliery method commonly used has sodium roasting, and---water logging, calcification baking---acidleach, empty roasting---acidleach, the direct acidleach in bone coal ore deposit and bone coal ore deposit oxygen are pressed acidleach.Adopt the highest also the having only about 70% of leaching yield of vanadium in these method bone coal ore deposits.
Contain Mo 3~6%, Ni 2~4%, V 0.2~1.5% and other valuable metal in the carbon containing nickel-molybdenum ore.The decomposition of carbon containing nickel-molybdenum ore at present adopts mainly that the atmospheric oxidation roasting---alkali soaks, or the carbon containing nickel-molybdenum ore stirs logical chlorine or adds the hypochlorite oxidation leaching in alkali lye.These two kinds of decomposition methods, the leaching yield of Mo all can reach more than 95%, and the leaching yield of V is more than 60%, but Ni stays in the leached mud further processing recovery.Also the someone adopts oxygen to press acidleach to decompose the carbon containing nickel-molybdenum ore, and the leaching yield of Mo, V, Ni is all than higher, but oxygen presses the tooling cost of acidleach decomposition carbon containing nickel-molybdenum ore higher, and is difficult to work continuously.
Contain Mo 8~20%, Ni 4~10%, V 1.5~3.5% and other valuable metal in the high impurity ferro-molybdenum.High impurity ferro-molybdenum is owing to low temperature softening, and its decomposition method is yellow soda ash mechanical activation oxidizing roasting---water logging, and Mo, V enter solution, and Ni stays in the leached mud, needs again through wet method or pyrogenic process recovery Ni wherein.
Summary of the invention is in order to improve the molybdenum-vanadium multi-metal metallurgy smelting materials comprehensive recovery, and shortened process is protected environment, reduces production costs, and the invention provides a kind of molybdenum vanadium multimetal metallurgical material resolving method.
Technical scheme of the present invention is: molybdenum vanadium multimetal metallurgical material resolving method comprises calcification oxidizing roasting, low temperature sulfurization roasting and three steps of water logging, add after lime mix thoroughly by 3~30% of metallurgical material weight, oxidizing roasting is 1~3 hour under 550~900 ℃ temperature, the SO that roasting produces
2Directly absorbed by lime Deng obnoxious flavour, the calcining that roasting obtains extraordinarily goes into to contain H by 1~5 of the required theoretical amount of reaction such as nickel, molybdenum, vanadium again
2SO
4After 10~85% sulfuric acid is mixed thoroughly, carry out re-baking under 150~350 ℃ temperature, the re-baking time is 1~2 hour, and the calcining that re-baking obtains adds water in 50~100 ℃ of agitation leachs 0.5~2 hour, filter solid-liquid separation, filtrate is for containing the valency metallic solution.
Described molybdenum-vanadium multi-metal metallurgy smelting materials comprises the high impurity ferro-molybdenum that contains scherbinaite colliery, carbon containing nickel-molybdenum ore and obtained by the smelting of carbon containing nickel-molybdenum ore.
Described lime comprises unslaked lime (CaO), white lime (Ca (OH)
2) and Wingdale (CaCO
3).
Described lime and metallurgical material are mixed thoroughly and are comprised mechanical stirring mixing, ball milling or grind mixing.
The sulfurization roasting of a described calcining low temperature is that calcining and sulfuric acid are mixed the back direct roasting thoroughly, or calcining and sulfuric acid are mixed roasting again after slaking thoroughly.
2MoS
2+7O
2→2MoO
3+4SO
2
(V
2O
3)+O
2→V
2O
5
4FeS
2+11O
2→2Fe
2O
3+8SO
2
2NiS+3O
2→2NiO+2SO
2
Ca(OH)
2+1/2O
2+SO
2→CaSO
4+H
2O
CaCO
3+1/2O
2+SO
2→CaSO
4+CO
2
CaCO
3→CaO+CO
2
CaO+1/2O
2+SO
2→CaSO
4
MoO
3+CaO→CaMoO
4
V
2O
5+CaO→Ca(VO
3)
2
Mo+3/2O
2+CaO→CaMoO
4
2V+5/2O
2+CaO→Ca(VO
3)
2
Ni+1/2O
2→NiO
H
2SO
4+NiO→NiSO
4+H
2O
CaMoO
4+H
2SO
4→CaSO
4+H
2MoO
4
Ca(VO
3)
2+H
2SO
4→CaSO
4+2HVO
3
H
2MoO
4+2H
+→MoO
2 2++2H
2O
HVO
3+H
+→VO
2 ++H
2O
The present invention compares with existing technology and has the following advantages and effect:
1. the molybdenum-vanadium multi-metal metallurgy smelting materials calcification baking not only can effectively be avoided the material sintering, prevents SO
2Produce Deng obnoxious flavour, and can improve the oxidation efficiency of valuable metals such as Mo, V.
2. the calcining that obtains of molybdenum-vanadium multi-metal metallurgy smelting materials calcification baking and sulphuric acid soln are mixed the back roasting thoroughly, and sulfuric acid increases with the trend of valuable metal reaction, reacts and carries out quicker more thoroughly.
3. the calcining that obtains of molybdenum-vanadium multi-metal metallurgy smelting materials calcification baking and sulphuric acid soln are mixed back low temperature sulfurization roasting thoroughly, have effectively avoided vitriolic to decompose and volatilization, and operating environment is good.
4. the calcining water logging after the low temperature sulfurization roasting again that obtains of molybdenum-vanadium multi-metal metallurgy smelting materials calcification baking, the leaching yield height of valuable metal.
Embodiment
Below in conjunction with embodiment, the present invention is further described:
Embodiment 1
Contain scherbinaite colliery (V
2O
50.82%) 100g and Wingdale (CaCO
3) levigate to negative 200 orders behind the broken mixing of 10g, put 800 ℃ of oxidizing roastings of retort furnace 2 hours into, the calcining that calcification baking obtains adds 1: 1 sulfuric acid 40ml through cooling and mixed post curing thoroughly 4 hours, put 280 ℃ of roastings of retort furnace 1.5 hours again into, the calcining that sulfurization roasting obtains adds water and stirs 80 ℃ of leachings filtration in 1 hour, must contain V
2O
50.17% filter residue 95.6g.
Embodiment 2
Levigately put 650 ℃ of oxidizing roastings of retort furnace 2 hours into to negative 200 orders after the fragmentation of 100g carbon containing nickel-molybdenum ore with behind 40g unslaked lime (CaO) mixing, the calcining cooling back that calcification baking obtains is stirred and is added 80ml and contain H
2SO
4250 ℃ of roastings of retort furnace 2 hours are put in pulp in 65% the sulphuric acid soln again into, and the calcining that sulfurization roasting obtains adds water and stirs 70 ℃ of leachings 2 hours.(%) is as follows for carbon containing nickel-molybdenum ore calcification oxidizing roasting---low temperature sulfurization roasting---water logging experimental result:
| Mo | Fe | Ni | Ca | As | Si | S |
The nickel-molybdenum ore leached mud | 3.20 0.12 | 6.41 4.52 | 1.67 0.02 | 17.09 32.16 | 0.87 0.43 | 8.79 6.49 | 8.51 26.1 |
Embodiment 3
High impurity ferro-molybdenum powder (negative 200 orders) 100g and dry hydrate (Ca (OH)
2) behind the 40g mixing, put 700 ℃ of oxidizing roastings of retort furnace 2 hours into, the calcining cooling back that calcification baking obtains is stirred and is joined 60ml and contain H
2SO
4In 75% the sulphuric acid soln, put 300 ℃ of roastings of retort furnace 1 hour after mixing thoroughly again into, the calcining that sulfurization roasting obtains adds water and stirs 90 ℃ of leaching 45min.(%) is as follows for carbon containing nickel-molybdenum ore calcification oxidizing roasting---low temperature sulfurization roasting---water logging experimental result:
| Mo | Fe | Ni | V | P | Si |
The ferro-molybdenum leaching yield | 11.06 97.6 | 68.24 --- | 4.23 98.7 | 1.56 86.1 | 5.72 --- | 3.42 --- |