A method for roasting polymetallic shale-enriching vanadium
A multi-metal and metal collector technology, which is applied in the fields of chemical industry and materials to achieve the effect of reducing the addition amount, reducing the amount of slag and reducing the amount of slag.
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Embodiment 1
[0031] figure 1 It is a schematic flow chart of the method for roasting and enriching polymetallic shale according to the present invention. combine figure 1 , a method for roasting and enriching polymetallic shale, the method comprising the following steps: crushing ball milling step 1, mixing and briquetting step 2, roasting step 3, ball milling step 4, flotation step 5, flue gas absorption step 6 , follow the steps below:
[0032] 1) subjecting the raw material to crushing ball milling to obtain polymetallic shale powder;
[0033] 2) the polymetallic shale powder obtained in the crushing ball milling operation 1, the chlorinating agent and the metal trapping agent are sent into the mixed briquetting process to cause pellets;
[0034] 3) The pellets obtained in the mixed briquetting process 2 are sent to the calcination process 3, and the calcination process is carried out under an inert atmosphere, and the flue gas generated by the calcination is sent to the flue gas abs...
Embodiment 2
[0038] This example adopts the method for roasting and enriching polymetallic shale described in Example 1. The vanadium-containing shale with a mass content of vanadium pentoxide of 0.8% is used, and is mixed with calcium chloride, pyrite and water in a mass ratio of 1:0.1:0.1:0.3, and then sent to the mixing and briquetting process for uniform mixing. The pellets were then prepared into 0.5mm pellets, dried and sent to the roasting step 3, roasted at 800°C for 4.0 h in a nitrogen atmosphere, and the flue gas generated by roasting was sent to the flue gas absorption step 6, where calcium oxide was used to capture the Chlorine is converted into calcium chloride, the obtained calcium chloride is returned to the roasting process 3, the roasted material is crushed and then sent to the ball milling process 4, and it is ball-milled to below 325 mesh and the content accounts for more than 95%, and the ball-milling process The good slurry is sent to the flotation process 5, and butyl...
Embodiment 3
[0042]This example adopts the method for roasting and enriching polymetallic shale described in Example 1. The vanadium-containing shale with a mass content of vanadium pentoxide of 1.1% is used, and is mixed with calcium chloride, pyrite and water in a mass ratio of 1:0.2:0.5:0.5, and then sent to the mixing and briquetting process for uniform mixing. The pellets were then prepared into 1.0mm pellets, dried and sent to the roasting step 3, roasted in a nitrogen atmosphere at 1000°C for 0.5h, and the flue gas generated by roasting was sent to the flue gas absorption step 6, where calcium oxide was used to capture the Chlorine is converted into calcium chloride, the obtained calcium chloride is returned to the roasting step 3, the roasted material is crushed and then sent to the ball milling step 4, and it is ball-milled to below 325 mesh and the content accounts for more than 95%, and the ball-milling process The good slurry is sent to the flotation process 5, and butyl xantha...
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