Artificial quartz stone slabs are increasingly used in the fields of high-end countertops, cabinets, and building decoration materials. Artificial quartz stone slabs are usually made of quartz sand or quartz powder bonded and solidified with resin, colorants and other additives. Therefore, the quality of quartz sand or quartz powder determines the performance of artificial quartz stone slabs to a certain extent.

  According to the whiteness and impurity content of quartz sand, quartz sand can be divided into different grades. According to the order of grades from high to low, the market generally becomes high-purity sand, refined sand, A sand, ordinary sand and other more Low grade sand, etc. To make high-quality boards, it is necessary to use high-quality quartz sand raw materials, that is, quartz sand with higher purity and fewer impurities. First, a good mineral source must be selected, and then the quartz ore should be washed, sorted and ground to remove miscellaneous stones, and then crushed or ball milled and screened to obtain granules or powder of a specified mesh size.

  The reserves of extremely high-quality quartz raw ore are small. In addition to natural crystals, the main components of other natural quartz ores are usually mixed with impurity minerals such as mica, feldspar, clay and iron, in addition to quartz ore. Due to the large number of variants and types of quartz, the properties of different quartz ores vary greatly, so mineral processing is crucial to the production of high-quality artificial quartz plates.

Application of magnetic separation in quartz sand mineral processing

  Through plate comparison, it was found that the grades of quartz sand and quartz powder vary widely due to differences in iron and impurity removal technology for the same high-quality quartz raw ore. Therefore, only high-quality quartz ore + advanced iron and impurity removal technologies such as mineral processing, washing, flotation, magnetic separation, color separation, pickling, etc. can produce high-quality quartz sand and powder, and then produce high-quality quartz Plate.

  Magnetic separation is an important process in quartz sand mineral processing. Magnetic separation can remove magnetic impurities in quartz sand to the greatest extent, including weakly magnetic impurity minerals such as hematite, limonite and biotite and magnetic impurities. Strong magnetic minerals mainly iron ore.

  Common magnetic separation processes are divided into wet magnetic separation processes and dry magnetic separation processes. The wet magnetic separation processes include permanent magnet drum magnetic separators, strong magnetic plate magnetic separators, vertical ring high gradient magnetic separators and electromagnetic pulp. Material magnetic separator; the magnetic separation equipment used in dry magnetic separation process includes strong magnetic roller magnetic separator and electromagnetic dry powder magnetic separator.

  At present, according to the development needs of the market, it is more common to choose the wet magnetic separation process. The wet magnetic separation process has good processing effects and can effectively separate magnetic and non-magnetic materials. The output is also relatively high, which reduces the processing cost and improves the processing efficiency.