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The invention claimed is:

Grinding  mill plant consists of mainframe, pace reducer, powder separator, blower, bag filter, pipes, cyclone, motor, etc. The peripheral equipments are jaw crusher, bucket elevator, feeder, hopper, electric powered deal with panel, etc. Break-day grinding Mill can grind all types of non-flammable and non-explosive mineral deposits with Moh’s hardness reduce than 9 and humidity much under 6%，and is broadly employed in metallurgy, manufacture of making materials, substance industry, mining industry, etc.

Why this happens, what is the reason for wearing a circuit board industry pollution hat? The reason, the following points: First, part of the circuit board business of environmental protection and clean production is not highly valued. The first analysis of the problem on their own circuit board. Rigid PCB Assembly Currently, there are a small part of the circuit board companies do not understand the importance of environmental protection and clean production. Many companies waste water treatment, wastewater recycling, clean production, etc. are to meet the inspection, or to the appropriate qualification certificate, not promote it to corporate social responsibility and legal level. Some time ago, we participated in the preparation of new standards for environmental protection work of the Ministry, during the visit a lot of companies and found that a large part of the enterprise wastewater treatment facilities still in use 5 years ago of the treatment process, only to deal with heavy metals, COD and other pollutants and no special treatment, and water reuse systems is the display. Many companies did not return with a deep understanding of technology, the blind pursuit of low price products, the results of a lot of back up equipment do not run, utterly useless. These are hardware problems, the other is soft management issues, such as not dealing with less dosing, waste-water treatment and so on. These actions, while only a handful of corporate behavior, but once they are seized exceeded, will be the circuit board industry wastewater pollution at high concentrations, and volatile, refractory and other reasons to justify the long run naturally in the minds of the public left the line board business is polluting enterprises impression. This is what we put on ourselves contaminated "hat." Second, external support business gives us trouble. From an environmental point of view, the external circuit board supporting the business enterprise is mainly waste recycling company bath. We all know that high concentrations of pollution bath waste, processing is difficult, there are many bad companies will waste close to the bath, the extract valuable heavy metals, puts the rest steal them useless waste into the environment , resulting in significant pollution, the Government and the people that this business is the pollution caused by circuit board, circuit board business is unable to discharge the waste processing, circuit board business is polluting enterprises. Third, propaganda is not enough, resulting in misunderstanding. Circuit board business of high-tech companies, are generally used for production of confidential situation, so outsiders do not understand the production process of the circuit board. Such as cyanide use in gold-plated circuit board industry and the electronic assembly sink is just a small amount of gold cyanide, and wastewater is recycled through the process online payments processed before it is discharged out of the workshop, therefore virtually no cyanide contaminated waste water This and alkaline copper electroplating plant usage and emissions levels are simply not comparable, but now there is the sight lines on the use of cyanide and cyanide equivalent to the plating.

In the early years, circuit boards are high-tech industry, foreign companies control most of the output, once the constraints and limitations of the circuit board industry to grow.Electronic PCB Assembly But now we board the development of enterprises are subjected to local restrictions, the more economically developed parts of this restriction, the greater, and why? Because we knew it, became a circuit board business development big government in the eyes of pollution, energy-hungry, water users! Attaches great importance to environmental protection and the sustainable development today, once put on such a "hat" circuit board companies really want to be "common enemies" of the. In fact, we are not big polluters, big energy, water users? Of course not! Our circuit board business is low power consumption, low pollution. We can compare the data based on the following: From an environmental perspective, waste water discharged by the industries and enterprises to do the pollution index contrast can be seen: 1 type of circuit board business relative concentration of pollutants, PCB Assembly mainly heavy metals copper and COD pollution, no cyanide / cadmium / chromium and other toxic material emissions, and no carcinogenic, teratogenic, mutagenic substances in the three-induced emissions. Of which the major components of heavy metal pollution --- copper ions, by conventional processing method can be easily removed, so the circuit board of pollutants to fear. 2 circuit board business of low concentrations of pollutants. As we all know, circuit board production requirements for water is high, mostly with pure water, waste water pumping main board out of the water. As can be seen from the table, relative to other polluting industries, the circuit board business at very low concentrations of pollutants discharged waste water, especially COD, but other polluting industries, 1 / 10. 3 circuit board business Electronic Assembly of the discharge of fresh water are less polluted. As the circuit board on the water demanding, and in the production process control is very strict, so the circuit board business in the salt water discharge (ie, conductivity) is low relative to many other industries. From the protection of freshwater resources in terms of key indicators of salt is any salt to fresh water resources are polluted.Therefore, comparison, circuit board business can only be called pollution. In summary, the circuit board industry in the eyes of government and social status of polluters is unrealistic.

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