Aijingshan lapis lazuli mine: The mine is located in Lishui County , Jiangsu Province. The deposit is located in the late volcanic rocks and belongs to the medium-low temperature hydrothermal filling deposit . Useful mineral celestite, associated minerals are kaolinite, quartz, feldspar and brown iron ore. The lapis lazuli is semi-self-shaped and flaky, and the aggregate can reach 100mm coarse ingots, and some of them are fine-grained. The multi-element analysis of raw ore is shown in Table 3. Rotary Blow Molding Machine,Rotary Bottle Blowing Machine,Rotary Stretch Blowing Molding Machine,Rotary Blowing Machine Demark(changxing)injection system CO. LTD , https://www.petplas.com
At present, it is open-pit mining and is only sold after simple processing such as screening and hand selection. The principle flow of the laboratory beneficiation test is shown in Figure 1 (omitted). After the crushed ore is less than 12mm, the coarse fraction of more than 1mm is graded for jigging; the fraction of fine fraction of less than 1mm is sorted by shaker, and the comprehensive index is: concentrate yield 45.38%. The concentrate grade (SrSO4) was 86.12%, and the recovery rate was 83.31%. After the jigging and shaker sorting, the middle mines can be floated and then floated to obtain higher indexes. During the flotation process, it is necessary to disperse the slime and inhibit the limonite. After the slurry is adjusted with Na2CO3 and Na2SiO3, the pH is preferably controlled between 8 and 9.5. When oleic acid is used as the collector , the temperature of the slurry is higher than 25 °C. In addition, the structure of the flotation process has a greater impact on the quality of the concentrate. When the flotation feed was taken as 100%, the yield of the flotation concentrate was 44.50%, the grade (SrSO4) was 86.04%, and the recovery rate was 95.68%. ingredient SrO SrSO4 Al2O3 SiO2 Fe2O3 BaO CaO content,% 6.85 47.59 7.85 29.73 6.78 1.78 0.3