1. Comprehensive utilization of technical methods and processes The purpose of refractory clay beneficiation and purification is mainly to reduce the content of "flux" components. Different methods are adopted for the harmful impurity components in the ore.
1 Desiliconization of refractory clay : Desiliconization is generally carried out by a single flotation method.
â‘¡ High aluminum clay removal of iron, titanium impurities: iron impurities disseminated in coarse pyrite flotation Removal present; micro-fine disseminated iron, titanium impurities available high gradient magnetic separation to remove; respect to The fine granules, ultramicroscopic inclusions and iron and titanium impurities in the form of isomorphism are more effective ways of selective chlorination.
3 De-potassium and sodium impurities of high-alumina clay: Potassium and sodium are mainly present in the ore in the form of hydromica and muscovite, which can be removed by flotation.
2. â‘ Examples of development and production of fireclay refractory desilication clay mineral such as Shanxi, Henan, and finely ground to 97% -200 mesh, sodium carbonate as adjusting agent, sodium hexametaphosphate phosphorus inhibitors, oxidation stone Lager soap and Tal oil are collectors . As a result of flotation, the ratio of aluminum to silicon of ore is increased from about 5 to above 8.
2 High-alumina clay de-ironing and titanium impurities on Hunan Chenxi ore, grinding to -200 mesh accounted for 30~50%, under natural pH conditions, using butyl xanthate as collector, dosage 50g/t, plus Appropriate amount of No. 2 oil, the most simple one-time selection process can effectively remove pyrite impurities.
The high-gradient magnetic separation technique was used to separate the Yangquan special grade ore in Shanxi. The Fe 2 O 3 was reduced from 1.48% to 0.70%, and the removal rate of TiO 2 was 88%.
3 De-potassium and sodium impurities of high-alumina clay on the second high-alkali clay ore in Gongyi, Henan, after grinding to -37um, 80%, pulp pH 9~10, sodium hexametaphosphate as dispersant, dosage 100g/t, Mixing sodium oleate and tart oil as collectors, the dosage is 500 and 1000g/t respectively. After one rough selection process, the contents of K 2 O and Na 2 O are decreased by 2.25% and 0.14% respectively. To 0.43% and 0.05%.Lifting Hook
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