Method for recleaning of vanadium-titanium magnetite concentrates by utilizing alkaline leaching, desliming and magnetic-gravity combined separation
A vanadium-titanium-magnetite concentrate and magnetic-gravity combined technology, applied in chemical instruments and methods, wet separation, solid separation, etc., to achieve the effects of improving comprehensive utilization rate, improving blast furnace utilization coefficient, and reducing emissions
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Embodiment 1
[0039] Such as figure 1 shown.
[0040] 1) Alkaline leaching
[0041] The TFe content is 50.8%, TiO 2 content of 14.9%, SiO 2 The content is 4.96%, Al 2 o 3 The vanadium-titanium magnetite concentrate with a content of 4.87% and a S content of 0.82% is placed in a NaOH alkali solution with a mass concentration of 15%, and is subjected to alkali leaching reaction at a temperature of 370° C. for 3 hours, and the reactant is filtered to obtain a filtrate and Alkali leaching filter cake A, NaOH consumption 85kg / t is fed to ore, and described filtrate is fed into recovery treatment system, and its chemical reaction formula is:
[0042]
[0043] 2) Desliming
[0044] Add water to the alkali leaching filter cake A in step 1) to prepare a slurry with a mass concentration of 21%, and feed it into a ∮ 3.0-meter desliming hopper for desliming operation to obtain sand settling B and overflow C.
[0045] 3) Combined magnetic gravity beneficiation
[0046] Add water to the grit ...
Embodiment 2
[0049] Such as figure 1 shown.
[0050] 1) Alkaline leaching
[0051] The TFe content is 51.3%, TiO 2 content of 14.2%, SiO 2 The content is 4.71%, Al 2 o 3 The vanadium-titanium magnetite concentrate with a content of 4.99% and a S content of 0.83% is placed in an 8% NaOH alkali solution, subjected to alkali leaching reaction at a temperature of 280° C. for 4 hours, and the reactant is filtered to obtain a filtrate and Alkali leaching filter cake A, NaOH consumption 75kg / t feeds ore, and described filtrate feeds recovery processing system, and its chemical reaction formula is the same as embodiment 1.
[0052] 2) Desliming
[0053] Add water to the alkali leaching filter cake A in step 1) to make a slurry with a mass concentration of 22%, and feed it into a ∮5.0m desliming hopper for desliming operation to obtain sand settling B and overflow C.
[0054] 3) Combined magnetic gravity beneficiation
[0055] Add water to the grit B in step 2) to make a slurry with a mass...
Embodiment 3
[0058] Such as figure 1 shown.
[0059] 1) Alkaline leaching
[0060] The TFe content is 52.7%, TiO 2 content of 13.1%, SiO 2 The content is 4.71%, Al 2 o 3 The vanadium-titanium magnetite concentrate with a content of 4.81% and a S content of 0.82% is placed in a concentration of 30% N a In OH alkaline solution, carry out alkali leaching reaction at 290°C for 5 hours, filter the reactants to obtain filtrate and alkali leaching filter cake A, the NaOH consumption is 85kg / t to feed the ore, and the filtrate is fed to the recovery treatment system , its chemical reaction formula is with embodiment 1.
[0061] 2) Desliming
[0062] Add water to the alkali leaching filter cake A in step 1) to prepare a slurry with a mass concentration of 23% and feed it into a ∮ 3.0-meter desliming hopper for desliming operation to obtain sand settling B and overflow C;
[0063] 3) Combined magnetic gravity beneficiation
[0064] Add water to the grit B in step 2) to make a slurry with a...
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