The pyrite cinder (dry mine) is sieved through a 100 mesh sieve, and the sieved product is ground in a rod mill for 5 min, the grinding concentration is C=70%, stirred for 5-8 minutes, and then re-selected on a shaker. The re-selected concentrate and tailings were magnetically selected on a magnetic separator, each with a magnetic field strength of 2500 Oersted. The process is shown in Figure 1: Figure 1 Shaker-magnetic separation combined process flow diagram Four products were obtained: concentrate I, concentrate II, medium mine, tailings. The test results are shown in the following table: Table Shaker - Magnetic Separation Test product name Yield (%) grade(%) Recovery rate(%) Fe S Fe S Concentrate I 8.27 63.16 0.260 10.28 1.24 Middle mine 11.55 57.29 0.232 13.02 1.54 Concentrate II 27.34 61.20 0.256 32.92 4.03 Tailings 52.84 42.09 3.07 43.76 93.19 total 100 50.82 1.74 100 100 Table above test results, the sulfur iron ore slag pretreated under the same conditions, with shaking - combined magnetic separation process to obtain products of lower quality iron ore. Although the grades of concentrate I and concentrate II concentrates are relatively high, they can reach 63.16% and 61.20%, but the cumulative concentrate yield and recovery rate are lower, which are 47.16% and 56.24%, respectively. Solvent Recovery Machine industry wide application, uses a wide range of production and processing industry basically will be used, kinds of solvent solvent Recovery Machine Recyclable are many, Calstar® is a solvent recovery machine equipment, it can help many enterprises to save most of the money, reduce the purchase cost of solvent, solvent recovery machine was born to the society has an important significance to the environment, reduce the waste of resources, and solve the environmental pressure. Plastic Products Solvent Recovery Machine Plastic Products Solvent Recovery Machine SHENZHEN KUANBAO ENVIRONMENTAL EQUIPMENT CO., LTD , https://www.calstarkb.com
At present, to promote energy saving and emission reduction, the development of low-carbon economy has become the main theme of the development of the world economy, especially for China which is a relative shortage of resources per capita, serious ecological damage power development, in the huge pressure of energy and environment, promote energy-saving emission reduction, it is imperative to develop low carbon economy. In the Copenhagen world climate conference held in December 2009, the Chinese government commitment to the 2020 unit of GDP carbon emissions than in 2005 decreased by 40% ~ 45%. In the future, all walks of life will move towards low energy consumption, low pollution and low emission direction, the development of flexible packaging industry can not be contrarian. Soft packaging industry as one of the more serious energy consumption and pollution, in the face of increasingly prominent energy and environmental problems, should assume more social responsibility, to contribute to energy saving and emission reduction.
In China to use a large number of organic solvents, emissions of a large number of high concentration of organic waste gas is an important cause of environmental pollution caused by the soft packaging industry. At the same time, the evaporation of organic solvent in the process of use also caused the problem of indoor pollution and safety. With the increase of people's awareness of environmental protection and national environmental protection, organic emission problem of the soft packaging industry has aroused social attention, soft packaging enterprises also obviously feel the increasing pressure of environmental protection, high discharge mode used by now has been difficult to project eia. Moreover, the future of national legislation in the field of environmental protection will be more stringent, flexible packaging enterprises must be a pressing matter of the moment to take effective measures to reduce emissions and energy consumption of organic waste gas, in accordance with the national energy-saving emission reduction targets