What are the hazards of fly ash dust?

It mainly reduces the water reduction effect and activity effect of fly ash, and the loss on ignition.

It is an important indicator of fly ash classification. If the loss on ignition is large, it mainly reduces the water reduction effect and activity effect of fly ash.

The unburned carbon in coal ash is a harmful component, and the greater the loss on ignition, the higher the carbon content, the greater the water demand of commercial concrete, resulting in a water-to-glue ratio.

The improvement seriously affects the full play of the effectiveness of fly ash, and the high ignition loss of fly ash will seriously affect the control of the gas content in commercial concrete.

Concrete, abbreviated as "concrete (tóng)": refers to a material made of cementitious material.

A general term for engineering composite materials that cement aggregates into a whole. The word concrete usually refers to the use of cement as cementitious material, sand and stone as aggregate; Cement concrete, also known as ordinary concrete, is widely used in civil engineering engineering when it is mixed with water (which can contain admixtures and admixtures) in a certain proportion and is mixed to obtain cement concrete.

Fly ash is the fine ash captured from the flue gas after coal combustion, and fly ash is the main solid waste discharged from coal-fired power plants.

The main oxide composition of fly ash in thermal power plants in China is: SiO2, Al2O3, FeO, Fe2O3, CaO, TiO2, etc. With the development of the power industry, the emission of fly ash from coal-fired power plants has increased year by year, and it has become one of the industrial waste residues with large emissions in China.

If a large amount of fly ash is not treated, it will produce dust and pollute the atmosphere; If discharged into the water system, the river will be silted up, and the toxic chemicals in it can also cause harm to humans and organisms. However, fly ash can be recycled, such as as as admixture for concrete.

Pollute the environment and increase inhalable particulate matter in the air. There is a risk of pneumoconiosis if inhaled.

Polluting the air, followed by the danger of dust**, at the same time affecting air quality, polluting the surrounding environment, etc.

Fly ash storage occupies a large amount of land, and it is stored in the open air, which seriously pollutes the surrounding environment and occupies a large amount of land. Especially in windy weather, fly ash will fly with the wind, causing serious air pollution.

1. Because the dust volume is very fine, generally between one hundredth of a millimeter and a few hundredth millimeters, it is difficult to see with the naked eye.

2 As the air blows, many germs are spread, and this one is deadly.

3. Inhalation of excessive dust by the human body is easy to cause occupational diseases and is also fatal.

4. If the TV, circuit board, computer host, and mobile phone in the electrical appliance are occupied by dust for a long time, it will damage the circuit, affect the quality, and affect the service life.

5 It is easy to combine with water vapor, harmful substances in the air, and it rains acid.

Dust hazards:

1. Hazards to the human body can cause occupational diseases

Production dust can cause different diseases according to its physicochemical properties and action characteristics. The lungs are one of the most important hazards of productive dust to the human body.

2. Dust pollution to the environment

Dust stains buildings and corrodes valuable ancient buildings. Dust that falls on the leaves of plants can hinder photosynthesis and inhibit its growth.

3. Dust hazards:

Dust refers to the instantaneous and rapid combustion of dust (** is a very rapid chemical or physical change process of matter, in the process of change quickly release huge heat and generate a large amount of gas, at this time the gas still exists in a limited space instantly, so there is a great pressure, the object around the ** point has a strong pressure, when the high-pressure gas expands rapidly**.

Dust is the enemy of human health, so people especially hate it, dust carries many bacteria, viruses and insect eggs everywhere and spreads diseases. Work.

Industrial dust and fine dust can make workers suffer from a variety of difficult occupational diseases, and excessive dust will also cause environmental pollution, affect people's normal life and work, and induce human respiratory diseases.

Dust is very harmful to computers. Excessive dust may clog the CPU fan, cause the fan to stop, cause the CPU to overheat and burn out, affect the contact between the boards, and may also cause corrosion of the circuit board.

Dust refers to the number of holes in the air with a diameter greater than microns, which can be used in daily life, but the more common dust is the dust generated by industrial production, and the bridge is extremely harmful to the human body. Inhalation of dust can cause pneumonia, silicosis, etc. Especially for people who work in chemical plants, frequent inhalation of dust may also cause serious diseases such as chronic obstructive pulmonary disease and lung cancer.

Dust is the enemy of human health, and dust carries many bacteria, viruses and insect eggs everywhere and spreads diseases. Industrial dust and fine dust can make workers suffer from a variety of difficult occupational diseases, and excessive dust will also cause environmental pollution, affect people's normal life and work, and induce human respiratory diseases. Dust is also beneficial, because if there is no dust in the atmosphere, the sun's rays will not be absorbed, reflected, scattered and refracted, and the sky will be either too bright or too dark.

Without dust, the water vapor in the air cannot condense, and the surface of the earth will become arid and barren.