What is the working environment of the silicon carbide plant when the wastewater is discharged from

Wastewater can be determined to be toxic, silicon carbide in the production process to add acid, wastewater is not treated if it is toxic, Jinmeng has a wastewater treatment pool, can make wastewater recycling, I hope mine is helpful to you.

Hello, I am glad to serve you and give you the following answers: The working environment of silicon carbide plant is relatively harsh, because the production process of silicon carbide will produce a large number of toxic and harmful substances, which will cause serious harm to the health of workers. Causes of the problem:

1.Toxic and harmful substances produced in the production process: A large number of toxic and harmful substances will be produced in the production process of silicon carbide, which will cause serious harm to the health of workers.

2.Lack of safety precautions: The safety precautions of silicon carbide plants are not perfect, and there are not enough safeguards to protect workers from toxic and harmful substances.

Workaround and practice steps:1Strengthen security measures:

Silicon carbide plants should strengthen safety protection measures, establish a sound safety protection system, and provide workers with sufficient protection measures to prevent toxic and harmful substances from causing harm to workers. 2.Strengthen safety education:

Silicon carbide plants should strengthen safety education, so that workers can better understand the hazards of toxic and harmful substances in Zaohong, and how to correctly use safety protection measures to prevent toxic and harmful substances from causing harm to workers. 3.Strengthen supervision and inspection

Silicon carbide plants should strengthen the supervision and inspection of safety protection measures to ensure the effectiveness of safety protection measures to prevent toxic and harmful substances from causing harm to workers. Personal Tips:1

Pay attention to safety when working: When working in a silicon carbide plant, you should pay attention to safety and use safety precautions correctly to prevent toxic and harmful substances from causing harm to workers. 2.

Strengthen safety awareness: It is necessary to strengthen safety awareness, understand the hazards of toxic and harmful substances, and how to correctly use safety precautions to prevent toxic and harmful substances from causing harm to workers.

The first is the pickling of silicon carbide. Pickling is usually done by treating the silicon carbide particles with sulphuric acid under heated conditions. Its main purpose is to remove impurities such as metallic iron, iron oxide, magnesium, aluminum and other impurities in silicon carbide.

The second is the alkaline washing of silicon carbide. The alkali washing of silicon carbide is usually also in the process of heating silicon carbide, and the silicon carbide particles are treated with sodium hydroxide. The main purpose is to remove free silicon, silica and other substances on the surface, which can increase the content of silicon carbide.

There are two methods: chemical iron removal method and physical iron contact method, and the following one will take a look at the specific process.

Chemical Iron Removal Method:Because silicon carbide is chemically stable and difficult to react with other substances, while iron is easier to react with other substances, we can use this to remove iron from the reaction. The iron in silicon carbide powder is mainly in the form of ferric oxide.

So what we mainly remove is ferric oxide, ferric oxide is alkaline chloride, which can be dissolved in acid by reacting with acid, silicon carbide powder is insoluble in acid, after the reaction, we collect the bottom silicon carbide powder, we use this method to iron in silicon carbide powder.

Physical Iron Touch Method:The iron element in silicon carbide powder can be removed by physical method, and the iron present in the differential can be selected by magnetic separator equipment, so as to achieve the effect of iron removal, but the effect of this method is not particularly good. There is also a direct solution in the grinding equipment, the production of SX-88 ultra-fine mill equipment using a new process, fineness can be adjusted at 500-5000 mesh, professional silicon carbide micro powder mill equipment, in which we can change the raw materials of the equipment to reduce the pollution of ferric oxide in the processing of the equipment, the use of stainless steel materials, directly at the source of production to reduce the pollution of ferric oxide.

If you want to remove its impurities, you need to pickle it, and the main steps are:

First of all, the pickling of silicon carbide. Pickling is usually carried out under heated conditions, with sulfuric acid to treat silicon carbide particles, the main purpose of which is:

In order to remove metal iron, iron oxide, magnesium, aluminum and other impurities in silicon carbide, it can be very clean and convenient to remove impurities in silicon carbide;

Secondly, alkali washing of silicon carbide. The alkali washing of silicon carbide is usually under heating conditions, and the silicon carbide particles are treated with NaOH, main.

The purpose is to remove the free silicon, silica, etc., so as to improve the content of silicon carbide and strengthen its silicon carbide content.

The concentration of concentrated sulfuric acid and nitric acid is low, the effect is not good, and the high concentration and high temperature reaction are 95%, and the flotation is not good.

I can design a carbon removal method for you. 15237105015 Zhengzhou

Pickling, impurity removal and carbon removal of silicon carbide special cutting material, silicon carbide powder contains free carbon, carbon will have a certain impact on the cutting effect in the process of crystalline silicon wafer cutting, by adding chemical reagents to make the free carbon in the slurry float on the surface of the slurry, and the floating free carbon is removed by the automatic carbon machine.

Silicon carbide is not a hazardous waste, but a raw material for many industrial supplies.

Silicon carbide (SiC) is made by smelting at high temperature in a resistance furnace with raw materials such as quartz sand, petroleum coke (or coal coke), and wood chips (salt is required to produce green silicon carbide). Silicon carbide is also found in nature with a rare mineral, moissanite. Silicon carbide is also known as moissanite.

Among the contemporary non-oxide high-tech refractory raw materials such as C, N, and B, silicon carbide is the most widely used and economical one, which can be called gold steel sand or refractory sand. At present, China's industrial silicon carbide is divided into two types: black silicon carbide and green silicon carbide.