eriz magnetic separator
PTMS magnetic separation
what is magnetic separation in science？
1) In order to carry out dust removal, vacuuming and sound insulation in such a wide gravel operation area, additional dust removal and vacuuming equipment is required and soundproofing materials are required. Once the soundproofing materials are installed, the investment and workload will be large and will also affect the natural lighting of the staff quarters.
2) Considering that Jiangxi Xinyu porcelain stone is more polished than ordinary stone for several hours, in order to reduce the ball milling time of the earth ball mill, it is proposed to add a pendulum mill, 37kw/set, the maximum size of the stone feed is 20mm. . Its characteristics: the powder is evenly distributed. The production standard is: 100 mesh: 2..8-3.5 tons/hour; 325 mesh: 2.5 tons/hour; 600 mesh: 0.6 tons/hour; 800-1000 mesh: 0.4 tons/hour; Device. That is, the dust removal device is used to change the dust to the dust collection. The diameter of the dust collecting pipe is set to 400 mm; the distance from the dust outlet of the dust collecting bag to the ground is set to 1100 mm; the diameter of the powder discharging port of the dust collecting bag is set to 230 mm; a total of 60 dust collecting bags are provided. It is expected that each pendulum mill can collect dust of 20kg/hour (when the powder is 500 mesh), which can significantly improve the dustiness of the job site. The entire installation and commissioning cycle is approximately 22 days.
3) Consider the possibility of purchasing the packaged powder instead. If the packaged powder is purchased instead, at that time, the amount of powder per ton needs to be increased by RMB 40. And if you continue to buy back the block and break it yourself, you will almost have to pay the price. The main basis for supporting this conclusion is the following two aspects: a) The process of the stone field determines the cost of the gravel operation. The process of the three lines of the stone field is: forklift (or "loader" ") Feeding into the large feed hopper - feeding the feed hopper into the transition hopper through the large drum motor - the crusher is broken - driven by the small roller motor to drive the conveyor belt and then enter the vibrating screen - after sieving and discharging - by the shovel The car is fed into the raw material warehouse or sent to the earth ball mill section for weighing. Main power equipment: a total of 153kw. Among them: large drum motor (Y180L-6): 15kw / Taiwan × 3 = 45KW jaw crusher (Y200L-4): 30kw / Taiwan × 3 = 90kw (one of which is a hammer crusher, also 30 KW ) Small drum motor (Y100L2 - 4): 3kw / table × 3 sets = 9kw vibrating screen motor (Y100L2 - 4): 3kw / set × 3 sets = 9kw night light: 1kw / 盏 × 4 盏 = 4kw and broken In the stone operation process, in addition to the electricity bill, there are consumable parts and spare parts costs for electromechanical equipment (especially the hammer head of the hammer crusher, which is changed almost every day; and the crushing of the stone with the iron hammer head adds a follow-up process. The amount of iron removal work; the cost of repairing or replacing the screen, bearings, belts, rollers, etc.), the cost of purchasing transportation, and the salary of the staff of the quarry. b) After purchasing the bagged powder, it is equivalent to adding two earth ball mills. Since the purchase of the bagged powder does not require the crushing operation, the ball mill rotation rate of the earth ball mill can be reduced by about 5,000 rpm. What is the concept of a ball mill revolution of about 5,000 revolutions? Assume that the total number of revolutions required to achieve the residue rate for each ball mill is 14,500 rpm. Assuming that 12 revolutions per minute and 720 revolutions per hour, each earth ball mill can save about 7 hours of power consumption per ball and reduce the loss rate of mechanical parts. Since the power of a single earth ball mill is 150kw, saving 7 hours of electricity per earth ball mill means a considerable cost savings. And 4 soil ball mills can save about 7 × 4 = 28 hours of ball milling time. The most important thing is: after purchasing the bagged powder, it can completely purify the production environment; it is convenient for employees to get a restful night's sleep, which will improve the efficiency of the next day; save about 28 hours of ball milling time, which is equivalent to an increase. Two earth ball mills.
Difficulties in dealing with problems
1) Higher requirements are placed on the selection of raw material suppliers, planned procurement of raw materials, transportation, acceptance, and storage.
2) Increased the workload of manual unloading and unpacking of bagged powder.
3) When the bagged powder is unpacked, it will be left unattended, and the bag or line will remain or be mixed in the raw material.
4) For the newly purchased bagged materials, at least semi-industrial production tests are required.
Focus on handling issues
1) Ensure technical specifications such as the residue rate and mud viscosity of the ball mill.
2) Ensure technical indicators such as shrinkage and expansion coefficient of soil materials.
process result
1) There is no additional dust removal or dust collection equipment. Instead of adding a pendulum mill, the idea of purchasing bagged powder is adopted.
2) The environmental sanitation of the staff quarters and the entire factory area has been improved, the safety of employees' sleep at night has been ensured, the number of staff at the quarry has been reduced, the ball milling efficiency has been greatly improved, and the problem that the number of ball mills is not sufficient is solved.
