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Method for gathering tellurium by roasting kawazulite and catalyst
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A catalyst and tellurium ore technology, which is applied in the field of high-purity tellurium extraction, can solve the problems of long process flow, high equipment requirements, and high roasting temperature, and achieve the effect of short process flow, low equipment requirements, and low roasting temperature
Inactive Publication Date: 2011-11-30
SICHUAN XINJU MINERAL RESOURCE DEV CO LTD
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Problems solved by technology
The roasting temperature of this method is as high as 1000°C, the roasting time is long, the equipment requirements are high, and the process is very long and complicated.
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Embodiment 1
[0027] 1. Grinding low-grade tellurium ore to an average particle size of 254 μm;
[0028] 2. The above-mentioned low-grade tellurium ore: NaIO 3 = 10000: 1 weight ratio of raw materials is added to the mixing kettle with agitator and thermometer to make it stir and disperse evenly;
[0029] 3. Slowly put 100 parts by weight of the above-mentioned uniformly dispersed mixture into a roasting furnace, roast at a temperature of 500° C. for 60 minutes, remove the slag, collect the flue gas and dust generated during the roasting process, and obtain the required product. The tellurium content is 35%;
[0030] 4. The above-mentioned product with a tellurium content of 35 wt% is prepared by hydrometallurgy to obtain 4N metal tellurium.
Embodiment 2
[0032] 1. Grinding low-grade tellurium ore to an average particle size of 211 μm;
[0033] 2. The above-mentioned low-grade tellurium ore: NaClO 3 =10000: 5 weight ratio raw materials are added in the mixing kettle with stirrer, thermometer, make it stir and disperse evenly;
[0034] 3. Slowly put 100 parts by weight of the above-mentioned uniformly dispersed mixture into a roasting furnace, roast at a temperature of 800° C. for 10 minutes, remove the slag, and collect the smoke and dust generated during the roasting process, which is the required product. The tellurium content is 38.5wt%;
[0035] 4. The above-mentioned product with a tellurium content of 38.5 wt% is prepared by hydrometallurgy to obtain 4N metal tellurium.
Embodiment 3
[0037] 1. Grinding low-grade tellurium ore to an average particle size of 220 μm;
[0038] 2. Add the above-mentioned low-grade tellurium ore: NaI+KI=10000:3 weight ratio raw materials into a mixing kettle with a stirrer and a thermometer to make it stir and disperse evenly;
[0039] 3. Slowly put 100 parts by weight of the above-mentioned uniformly dispersed mixture into a roasting furnace, roast at a temperature of 650° C. for 30 minutes, remove the slag, collect the flue gas and dust generated during the roasting process, and obtain the required product. The tellurium content is 37wt%;
[0040] 4. The above-mentioned product with a tellurium content of 37wt% is prepared by hydrometallurgy to obtain 4N metal tellurium.
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Abstract
The invention discloses a method for gathering tellurium by roasting kawazulite and a catalyst, which is characterized by comprising the steps of: grinding low grade kawazulite until the average particle diameter is 254-211 mu m, adding raw materials of the low grade kawazulite and the catalyst into a mixed kettle with a stirrer and a temperature meter according to the weight ratio of 10000:1-5 to ensure that the raw materials are uniformly stirred and dispersed; slowly putting 100 parts of the uniformly dispersed mixture into a roasting furnace, roasting at 500-800 DEG C for 10-60min, removing slag, collecting smoke and dust generated in a roasting process to obtain a required product with tellurium content of 35-38.5 percent; and carrying out wet-process metallurgy on the product with the tellurium content of 35-38.5 percent to prepare 4N metal tellurium.
Description
technical field [0001] The invention relates to a method for enriching tellurium by roasting tellurium ore and a catalyst, belonging to the field of refining high-purity tellurium. Background technique [0002] Zhou Lingzhi and Chen Shaochun edited "Sparse Metal Extraction Metallurgy", Metallurgical Technology Press, November 2008, pages 304-310, enriching tellurium by roasting sulfuric acid and tellurium ore. The roasting temperature of this method is as high as above 1000°C, the roasting time is long, the equipment requirements are high, and the technological process is very long and complicated. The recovery rate is only about 75%. Desperate to improve. Contents of the invention [0003] The object of the present invention is to provide a method for enriching tellurium by roasting tellurium ore and a catalyst for the deficiencies of the prior art, which is characterized by roasting tellurium ore with a tellurium content higher than one-thousandth or more and enriching...
Claims
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Application Information
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