The current papermaking technology usually uses wood (plant fiber) or stone (calcium carbonate) as raw material, both of which will cause damage to the ecological environment. However, it is inevitable to produce stainless steel slag in the production process of steel (stainless steel). The comprehensive utilization of stainless steel slag in papermaking not only solves the problem of environmental pollution caused by steel slag, but also produces higher economic benefits. So, how to make paper with steel slag?
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The principle of papermaking technology for comprehensive utilization of stainless steel slag is to use stainless steel slag as the raw material for papermaking, and use steel slag micro-powder vertical mill ultra-fine powder technology and strong magnetic separation technology to process stainless steel slag, so that the stainless steel slag has a particle size of 800-1000 mesh and can be used for The superfine micropowder for papermaking is then mixed and modified with superfine micropowder as the main raw material and polymer materials, and then calendered to form base paper. In addition, the paper made by comprehensive utilization of papermaking technology from stainless steel slag will automatically embrittle into a broken eggshell shape after being exposed to sunlight for 6 months, and it can be degraded into powder (inorganic mineral powder) after being buried in the ground for a year without causing environmental pollution. After the paper is recycled, it can be directly returned to the production line for utilization (the traditional process needs to be repulped). Even if the incinerator is used for incineration, only the polymer material is burned. The stainless steel steel slag powder can promote the contact between the polymer material and the air to accelerate the complete combustion, and will not produce black smoke due to lack of oxygen and smoldering. There is no toxic waste gas after combustion, and the emission of carbon dioxide is very small.
Comprehensive utilization of stainless steel slag papermaking equipment, including dry pulverization system: including magnetic separator and steel slag fine powder vertical mill, stainless steel steel slag is removed by magnetic separator and then passed through steel slag fine powder vertical mill to form ultra-fine powder with a particle size of 800-1000 mesh; calender papermaking The system includes a polymer material modification device and a calender; the dry pulverizing system and the calendering papermaking system are sequentially arranged along the process direction, and the calendering papermaking system, the ultrafine powder is modified by the polymer material After the device is modified, the base paper is formed through the calender. The technical process of papermaking technology for comprehensive utilization of stainless steel slag is as follows: the stainless steel slag with a particle size of 0-200mm is crushed to 0-15mm after passing through the secondary jaw crusher, and the fine particles with a particle size of 0-15mm are screened by a vibrating screen before passing through the crusher. After being crushed to 0-8mm, it is subjected to magnetic separation by magnetic separator, and the steel slag after the removal of metal by magnetic separation is ground to 800-1000 mesh by steel slag micro-powder vertical mill; paraffin wax is added into the mixer, and then passed through the polymer material modification device After modification, it enters the calender for calendering to make paper.
The difficulty of comprehensive utilization of stainless steel slag in papermaking technology lies in the dry pulverization system. Due to the high content of iron oxide in steel slag, the difficulty of grinding is increased, and the power consumption of steel slag fine powder is high, and the processing of steel slag fine powder is difficult. Based on this, the HLMX steel slag micro-powder vertical mill system developed and produced by Guilin Hongcheng provides technical support for the comprehensive utilization of stainless steel slag in papermaking. The vertical grinding mill is used to grind steel slag, and the material is ground in a high-temperature (100°C-300°C) humid environment, so that most of the free calcium oxide and magnesium oxide in the steel slag micropowder are hydrated into highly active calcium hydroxide and magnesium hydroxide, In the production process of steel slag powder, only part of the hot gas is needed to dry the moisture in the steel slag, and there is no smoke and dust emission. Moreover, producing one ton of 800-1000-mesh steel slag powder with a steel slag fine powder vertical mill saves 30% to 50% of electricity than using a traditional ball mill.
Steel slag fine powder vertical roller mill processing and preparation of steel slag fine powder is also a green environmental protection project, which belongs to the project encouraged by the state. It can not only turn waste into treasure, increase the added value of steelmaking, create considerable economic benefits for steel enterprises, but also protect the environment. It is a good thing that benefits the country and the people, has a broad future and is of great significance. It will play a positive role in promoting the construction of "zero-waste cities" and the sustainable development of the steel industry. If you are interested in steel slag fine powder papermaking and want to know about steel slag fine powder vertical mill, please leave us a message for equipment details.
