Pros and cons of spodumene flotation

The flotation of spodumene, there are two different processes, one is flotation, the second is the anti-flotation.
    Flotation process is that of spodumene flotation process: its essence is: the finely ground ore in sodium hydroxide or sodium carbonate to form the alkaline medium, high concentration, strong mixing and repeatedly washing the mud off, add fatty acid or soap as collector agent direct flotation of spodumene.
    and Design Institute Soviet Union had conducted a mineral deposit Zaoui piano studies, mine for the pegmatite deposits, with a sample collected from coarse-grained, local weathering, spodumene grain to more than 10 to 15 mm. The proposal process for the hospital to develop positive flotation process, shown in Figure 1, click here to get the process handle mine grade of greater than 5% Li2O spodumene concentrate, recovery of 70 to 75%.
Figure 1 deal with the Soviet Union Zaoui piano mine proposal process
    As early as 1960, in the Xinjiang spodumene pegmatite quarry for mineral studies, mineral processing workers in China and worked out on the first invention is not off the mud, do not wash ore flotation soda is to simplify the process. Shown in Figure 2. The process for the production in 1961, industrial production indicators: to ore containing 1.3 ~ 2% Li2O, spodumene concentrate grade of 4 ~ 5% Li2O, 85 to 90% recovery rate.
    Anti-flotation process is regulated in alkaline medium lime to dextrin, starch, a class of modifiers inhibit the spodumene, the cationic collector for silicate gangue minerals foam floats, tank product is spodumene concentrate, Figure 3 shows Denver's recommended anti-flotation process.
    Figure 2  Working Principle Of Raymond Mill is floating spodumene washing soda simplify the processFigure 3 Denver's recommended anti-flotation process
    50 and 60 years, the United States to use more anti-flotation process, the United States and China spodumene flotation plant are used is flotation process.
    (1) separation of spodumene and beryl
    In the granitic pegmatite deposits of spodumene are often associated with beryl, their separation was once regarded as one of the problems of lithium beryllium ore, domestic and foreign have been extensively studied in the early 1960s the development of our mineral workers the following three kinds of lithium beryllium separation process:
    ① flotation part of the lithium, beryllium and lithium re-election separation of mixed
    With NaF, Na2CO3 adjusted dose, with the fatty acid soap of spodumene flotation section, and then add NaOH and Ca2 +, mixed with a fatty acid soap of spodumene flotation - beryl, spodumene finally - Beryl foam products with Na2CO3 , NaOHT and acid, alkaline water glass after heat treatment, flotation separation of beryl, in principle, the process shown in Figure 4. The process in 1965 after the success of semi-industrial tests have been transferred directly to production.Part of Figure 4 flotation of spodumene, spodumene - Beryl and then mixed with the principle of separation processes selected
  
    ② Priority beryl, spodumene and then the first
   Ball Mill operation  Easy floating minerals before the election, then Na2CO3, Na2S and NaOH alkaline medium high spodumene in the suppression manipulation conditions, the flotation of beryl with a fatty acid soap. Beryl flotation tailings by NaOH activation, add the fatty acid soap flotation of spodumene. Principles of the process shown in Figure 5. This process later used as the concentrator design Keketuohai One series production process.
    ③ Priority spodumene, beryl, and then choose
    In Na2CO3 alkali lignin (alkali soluble lignin sulfonate) for a long time the role of low-alkali medium, the beryl, and gangue minerals is inhibited, oxidized paraffin with soap, naphthenic acid soap and diesel flotation of spodumene. Then add NaOH, Na2S and FeCl3 inhibited activation of beryl and gangue minerals, with soap and diesel oxidation of paraffin flotation of beryl. Principles of the process shown in Figure 6. This process later used as the concentrator design Keketuohai 2 series production process.
    The early 1960s with the development of these three processes Keketuohai lithium pegmatite beryllium ore was semi-industrial tests, the tests have been successful, the results are shown in the table below.