According to news reports in mid-September, the LED industry was stopped by the China Energy Conservation and Benefits Subsidy Policy in the first half of this year. The LED backlight market in June and July turned weak, but the lighting orders were released in the second half of the year, and some

During flotation, the ups and downs of minerals are almost independent of the specific gravity of the mineral. The floatability of minerals is related to their affinity for water. Any mineral that has a high affinity with water and is easily wetted by water is difficult to adhere to bubbles, and it

(1) Treatment and waste water containing heavy metals Acid (2) ferrous sulfate containing heavy metals Acid Waste Water Treatment The metal in the wastewater is removed by using ferrous salt, the wastewater is mixed with the iron compound, and then alkali is added for neutralization, and oxidatio

1. Classification according to the direct cause of the accident (GB/T 13861-1992 "Classification and Code of Dangerous and Harmful Factors in Production Process") (1) Physical hazards and harmful factors: including equipment and facility defects, electrical hazards, high and low temperat

I. Safety management tasks of mining enterprises The task of safety management in the mining industry is guided by the important thinking of the "Three Represents", implements the guidelines and policies, laws, regulations and standards of the party and the state regarding mine safety pr

Screening analysis is generally performed in the laboratory and is a method of analyzing the particle size composition of the material for the purpose of testing. A test conducted on a fine material of less than 0.5 mm is usually referred to as a sieve analysis. For tests greater than 0.5 mm, the s

With the popularity of self-driving tours, many people want to use the holiday to go out by car. Many people with a driver's license may choose to rent a car to travel to a scenic spot. For those who do not have car rental experience, they may not under

Zibo Boji Cement Machinery Co., Ltd. specializes in the production of belt conveyors, bucket elevators, ball mills, screw conveyors, various models of dust collectors, crushers, etc. and undertakes coal conveying system production lines, aerated concrete block production lines, and cement productio

First, the quality of photovoltaic power plant in the end how serious? Third-party testing center Beijing Certification Center testing found that a 8MW photovoltaic power plant in Xinjiang 3178 PV module 2856 mid-infrared imaging sampling, of which 19% exists Weld hot spot effect. Gansu 10MW phot

The picture shows a conceptual drawing of the artist depicting the light trapped on the surface of a top-up insulator. A new study shows that we can combine light with individual electrons and combine them to create a new type of light. In common materials, light produces a series of reactions wi

At present, the gold mining industry sector still lacks in-depth research on gold- cobalt - arsenic concentrates. The authors studied the results of the gold-drill-arsenic flotation concentrate using the pyro-hydrometallurgical process. The process includes: two-stage calcination of the flotation c

3) Second-choice process: The second selection was put into operation in 1973 to treat the shaft furnace roasting ore. The original design used a continuous grinding magnetic separation process. After a long period of production adjustment and process improvement, production indicators have increas