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Green Production of Rock Wool

Jul. 23, 2020

Existing technologies can no longer meet the requirements of green production with greater capacity, lower energy consumption and more automation. In order to improve this situation, the rock wool industry has made a lot of efforts for this. For example, the Nanjing Fiberglass Research Institute has realized the design of a mineral wool production line with an annual output of 50,000 tons through independent research and development and the introduction of some key components. This type of production line realizes the large-scale production of mineral wool while greatly reducing the energy consumption of production; in the production process, an automated intelligent logistics system is adopted to improve the degree of automation of the production line. It is through this change that the extensive production model of the traditional rock wool industry has been changed, and then it has turned to an intensive production management model.

Energy conservation and emission reduction is a link that cannot be ignored in the realization of green production. Under the general trend of national energy conservation and emission reduction, the exhaust gas, wastewater and waste residues (referred to as the "three wastes") generated in the production of mineral wool need to be comprehensively treated and managed, and comply with the inspection of environmental management departments. , In line with relevant national policy requirements.

In general, if a modern Rock Wool Insulation production line wants to achieve green production goals, it often focuses on the following points. One is to recycle carbon monoxide. As we all know, carbon monoxide is toxic and can cause a greenhouse effect. But at the same time, carbon monoxide itself is a fuel, it is the main component of gas. Modern production lines often set up waste gas incinerators to fully burn the carbon monoxide in the waste gas. At the same time, in order to save energy, the waste heat must be recycled. For example, the heat exchange system can be used to heat first, or to heat the tap water, to realize the daily hot water supply in the living area of the factory, and more thoroughly realize the energy-saving goal. The second is the recycling of wastewater. Wastewater is an issue that almost all industrial production lines must consider. A wastewater recycling system or wastewater purification system is necessary for modern production lines. For the rock wool industry, after the sewage is processed by the filter device, it is reused to the binder preparation station, which can realize zero discharge of production wastewater. The third is to filter dust. Dust is fine particles suspended in the air. Long-term inhalation will cause great harm to the health of workers and nearby residents. The modern production line should be equipped with a complete dust filtration system to filter the dust carried in the exhaust gas to achieve the standard discharge of the exhaust gas. At the same time, the filtered dust should be recycled. The fourth is to avoid the emission of sulfur dioxide. Sulfur dioxide is the main culprit of acid rain, and it also endangers human life and health. The modern production line should be equipped with a desulfurization system to remove sulfur dioxide in the exhaust gas to achieve the goal of clean production. The fifth is the recovery of solid waste. The waste residue and cotton waste generated by the production line should be reused in the production of mineral wool through the recycling system, so as to realize the recycling of solid waste from the mineral wool production line and reduce production costs.

Rock Wool Insulation Production Line

Rock Wool Insulation

At present, a series of modern production lines represented by the production line designed by Nanjing Fiberglass Research Institute have truly realized the clean production and environmental friendliness of the factory through the above series of advanced environmental treatment technologies.

At the same time, for the company itself, the realization of green production is not only in line with national policies and people's aspirations, but at the same time, it is often beneficial to the company's own profits. The disorderly discharge of production waste not only harms the environment and the interests of people but is also a short-sighted behavior even in the interests of the enterprise itself. For the solid waste recycling mentioned above, industrial solid waste (referred to as industrial solid waste) is solid waste such as mining waste rock, beneficiation tailings, fuel waste residue, smelting, and chemical process waste residue discharged during industrial production. According to the relevant statistics in the "Twelfth Five-Year Plan for the Comprehensive Utilization of Bulk Industrial Solid Wastes", the total stockpiles of bulk industrial solid waste reached 27 billion tons, and the stockpiles will occupy an additional 400,000 mu.

The direct discharge of industrial solid waste into the environment will cause serious environmental pollution, and landfill treatment requires a large number of land resources and causes a waste of resources.

As far as the mineral wool industry is concerned, a few developed countries in the world have developed new mineral wool production technologies, using industrial solid waste instead of natural ore as raw materials for mineral wool production. This technology can turn more than 90% of solid waste into waste. treasure. On the one hand, the application of this technology reduces the consumption of natural ore, and on the other hand, it can effectively treat industrial solid waste and achieve optimal utilization of energy. It is a technology that is worth promoting. However, the raw materials used in domestic mineral wool production are still mainly natural ore, with a small amount of industrial slag added. The large-scale use of industrial solid waste as raw materials for the production of mineral wool is still in its infancy in China, and it is urgent to realize the comprehensive utilization of industrial solid waste recycling and the protection of natural mineral resources through independent research and development. If the new technology of mineral wool production is adopted, the total production capacity of my country's mineral wool in 2014 is estimated to be 2.15 million tons, which can increase the income of the mineral wool industry by about 860 million yuan, and the economic value is very considerable.

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