Method for enriching and recovering niobium, rare earth and titanium from polymetallic ore containing iron, niobium and rare earth
A polymetallic ore and rare earth technology, applied in the field of niobium resource utilization, can solve the problems of low grade, difficult and efficient enrichment of niobium ore phase, and failure to meet the production standards of high-grade ferroniobium. Actionable effect
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Embodiment 1
[0040] Enriching recovered from iron-containing niobium, niobium, rare earth metal ores multiple, rare earths, titanium, comprising the steps of:
[0041] (1) the Nb-containing low grade / RE / titanium complex mineral material (e.g., low-grade primary processing of the obtained niobium concentrate which Nb 2 O 5 Content of 2.37%, TiO 2 Content of 4.13%, Fe content of 16.75%, the content of rare earth oxide REO 3.32%, CaO content of 14.03%, SiO 2 Content of 12.75%, MgO content of 10.05%, Al 2 O 3 Content of 1.87%, niobium mainly columbite, iron niobium rutile, aeschynite present form), a flux (limestone chosen embodiment of the present embodiment), reducing agent (in the present embodiment selection coke, containing a C content of 84%) by 100: 20: 4 by mass mixed in a ratio of ingredients;
[0042] (2) Step (1) obtained is put into the melting furnace ingredients, smelting slag and flue gas output; control the melting temperature of 1550 deg.] C, the melting time for 30 min; step ...
Embodiment 2
[0048] Enriching recovered from iron-containing niobium, niobium, rare earth metal ores multiple, rare earths, titanium, comprising the steps of:
[0049] (1) the Nb-containing low grade / RE / titanium complex mineral material (e.g., iron, niobium rare earth concentrate which Nb 2 O 5 Content of 5.40%, TiO 2 Content of 4.29%, Fe content of 35.09%, the content of rare earth oxide REO 4.11%, CaO content of 3.91%, SiO 2 Content of 20.05%, MgO content of 1.17%, Al 2 O 3 Content of 0.34%, niobium mainly columbite, iron niobium rutile, aeschynite present form), a flux (in this embodiment chosen limestone and dolomite mass ratio of 1: 1 mixture), reducing agent (in the present embodiment selection and grain anthracite coal mass ratio of 1: 0.5 mixture, the total average C content of 79%) of 100: 73: 15 mass ratio of the mixed ingredients;
[0050] (2) The step (1) into the resulting ingredients smelting shaft furnace, melting yield an alloy containing iron, slag, and flue gas; control t...
Embodiment 3
[0056] Enriching recovered from iron-containing niobium, niobium, rare earth metal ores multiple, rare earths, titanium, comprising the steps of:
[0057] (1) the Nb-containing low grade / RE / titanium complex mineral material (e.g. niobium iron ore which Nb 2 O 5 Content of 3.52%, TiO 2 Content of 4.29%, Fe content of 14.03%, the content of rare earth oxide REO 1.50%, CaO content of 14.03 percent, of SiO 2 Content of 12.75%, MgO content of 10.05%, Al 2 O 3 Content of 1.87%, niobium mainly, rutile niobium iron, niobium is present in the form of iron aeschynite), slag forming agent (chosen embodiment of the present embodiment dolomite), reducing agent (Powder Coal embodiment of the present embodiment, C content of 89%) by 100: 54: 6 mass ratio of the mixed ingredients;
[0058] (2) The step (1) resulting into the converter ingredients smelting, smelting slag and flue gas output; control the melting temperature of 1550 deg.] C, the melting time for 30 min; step by controlling (1) t...
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