Because "super ultra-deep deposit mining technology" is now a high-end gold mine field of study, which covers the three metal mining development themes - core meaning "green mining, deep mining, mining intelligence" of. 1. Intelligent deep well drilling machine full-section excavation and once-forming technology The study of deep well boring machines is a prerequisite, and only in this way can one-time rapid well formation be achieved. 2. Collaborative operation continuous mining intelligent mining technology in multi-production area of ​​large mining section 3. High stress induced cracking and short delay large hole coupled blasting technology How to blast at the bottom of 2000m or even deeper? 4. Pumping and cementing filling technology for bottom hole pumping station and full tail sand paste How to backfill after mining is also a problem that needs to be solved in deep well mining. 5. The slurry lifting technology of the bottom hole crushing and grinding, high lift pumping slurry to the ground selection plant After deep mining, how to transport the mine to the ground is also one of the technical difficulties in deep well mining. 6. Regional ground pressure and stress monitoring technology for intensive mining in deep wells 7. Thermal environment and deep temperature control technology of deep deposits Geothermal heat is one of the main reasons for deep mining, because the geothermal gradient is about 3 ° C / 100 m. Moreover, the use of ordinary underground ventilation and heat dissipation cannot meet deep well mining. 8. Informatization and intelligence of the mining process of deep deposits In the future, if mining needs to be developed, it must be dominated by informationization and intelligence. Artificial mining technology will be eliminated due to its danger and low efficiency. 9. Intelligent trackless mining equipment with intensive production of deep well production Intelligent intelligence can only be achieved if equipment is intelligent. Deep mining is a difficult problem for metal mining now, and it is also a difficult problem for metal mining in the future. The development and utilization of deep mineral resources has unlimited development space, which will bring subversive changes to traditional mining. Sodium hydrosulfite is widely used in the textile industry for reducing dyeing, reducing cleaning, printing and decoloring, and for bleaching silk, wool, nylon and other fabrics. Because it does not contain heavy metals, the bleached fabric has bright color and is not easy to fade. In terms of various substances, sodium silicate can also be used for food bleaching, such as gelatin, sucrose, honey, etc., soap, animal (vegetable) oil, bamboo, porcelain clay, etc. Sodium hydroxide can also be used in organic synthesis, such as reducing agent or bleaching agent in the production of dyes and medicines. It is the most suitable bleaching agent for wood pulp and papermaking. Moreover, many heavy metal ions such as Pb2+ and Bi3+ can be reduced to metals in water treatment and pollution control, and it can also be used to preserve food and fruits. However, due to the many dangers of sosso, many of its uses tend to be replaced by thiourea dioxide, which is safer and easier to store and transport. Sodium Hydrosulfite,Sodium Hydrosulfite 88%, Sodium Hydrosulfite 90% HENAN JINHE INDUSTRY CO.,LTD , https://www.hntitaniumdioxide.com
Beyond the traditional deep mining 9 major technology - hear what Gu Desheng academicians say
On October 11, 2016, at the 2016 Mining Frontier and Informatization Intelligent Technology Annual Meeting, Academician Gu Desheng made a detailed and in-depth report on “Promoting Deep Development to High-end Transformation†and elaborated on the deepening of the tradition. Production technology field.