Method for improving leaching rate of magnesium oxide in serpentine ammonium salt roasting product
A technology of roasted products and halite ammonium salts, which is applied in the direction of magnesium oxide, etc., can solve the problems of affecting performance, reducing the yield of magnesium products, and the negative impact of process closed loop, so as to achieve the effect of increasing yield and increasing utilization value
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Embodiment 1
[0020] Example 1: ① Take some serpentine ore powder (Qinghai sample) that has been crushed to 100-200 mesh, and carry out ultra-fine grinding processing on it through an ultra-fine pulverizer until the average particle size of the powder is d 50 =3~4μm;
[0021] ② Take 1 part of the mineral powder that has been ultra-finely crushed in ①, add 1.5 parts of 60-200 mesh ammonium sulfate, and then add 0.03 parts of 80-200 mesh sodium sulfate, mix well and put it in the reactor. In a heating furnace, the temperature is raised to 600-700°C by program, and roasted at a constant temperature for 1 hour;
[0022] ③ After the roasting is completed, add 5-10 parts of warm water to the roasted product and fully stir to dissolve it in water, so that the soluble components in the product are completely dissolved;
[0023] ④ filter the suspension in ③, and wash the filter cake to obtain magnesium-enriched filtrate and magnesium-extracted filter residue respectively. The chemical composition ...
Embodiment 2
[0024] Embodiment 2: ① Take a number of asbestos tailings powders that have been crushed to 100-200 mesh, and use an ultra-fine pulverizer to perform ultra-fine grinding processing on them until the average particle size of the powder is d 50 =5~6μm;
[0025] ②Take 1 part of the ultrafinely crushed ore powder in ①, add 1.5 parts of 60-200 mesh ammonium sulfate, then add 0.15 parts of 80-200 mesh sodium sulfate, mix well and put it in the reactor. In a heating furnace, the temperature is raised to 600-700°C by program, and roasted at a constant temperature for 1 hour;
[0026] ③ After the roasting is completed, add 5-10 parts of warm water to the roasted product and fully stir to dissolve it in water, so that the soluble components in the product are completely dissolved;
[0027] ④ filter the suspension in ③, and wash the filter cake to obtain magnesium-enriched filtrate and magnesium-extracted filter residue respectively. The chemical composition and quality of the magnesiu...
Embodiment 3
[0028] Example 3: ① Take some serpentine ore powder (Inner Mongolia sample) that has been crushed to 100-200 mesh, and use an ultra-fine pulverizer to perform ultra-fine grinding processing on it until the average particle size of the powder is d 50 =7~8μm;
[0029] ② Take 1 part of the mineral powder that has been ultra-finely crushed in ①, add 1.3 parts of 60-200 mesh ammonium chloride, then add 0.1 part of 80-200 mesh sodium chloride, mix well and place it in the reactor, and put the reaction The device is placed in a heating furnace, and the temperature is raised to 350-500 ° C by program, and roasted at a constant temperature for 1 hour;
[0030] ③ After the roasting is completed, add 5-10 parts of warm water to the roasted product and fully stir to dissolve it in water, so that the soluble components in the product are completely dissolved;
[0031] ④ filter the suspension in ③, and wash the filter cake to obtain magnesium-enriched filtrate and magnesium-extracted filte...
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