This technology has tapped the potential of the new and old Bayer process system of alumina, and overcomes the disadvantages of long process, high consumption, high energy consumption and high cost of the hybrid process. It is the first time in China to overcome the industrial technical difficulties of low aluminum-silicon composite clinker sintering. The clinker-to-silicon ratio decreased to an average of 1.6 or less. For the first time, the sintering process crude oil and Bayer process dissolution co-integration process technology were used, and 9 processes such as de-siliconization and carbon removal of the crude liquid in the sintering process were eliminated, which simplified the production process of the sintering process. Achieve efficient and low-cost production.
After the technology is applied in industry, compared with the original mixed-mixing process, the process energy consumption is reduced by about 20%, the manufacturing cost per ton of alumina is reduced by 10%, and the economic and social benefits are very significant, in order to make full use of the domestic low-grade bauxite resources. It is of great significance to promote energy saving and emission reduction in the alumina industry, improve the core competitiveness of enterprises and achieve sustainable development.
Venous cannula is also a deep venous puncture catheter. The method is to select the appropriate puncture site and insert the needle under the skin, and insert the needle with negative pressure until the dark red blood is absorbed, indicating that the needle has entered the vein, and the guide wire is inserted. Withdraw the puncture needle to leave the guide wire in the blood vessel, and then insert the venous catheter that needs to be indwelled along the guide wire, then exit the guide wire, inject diluted heparin saline and fix the catheter, the deep venous catheterization is completed. The veins for puncture and catheterization are usually selected clinically, including the subclavian vein, internal jugular vein, and femoral vein. After the puncture catheter is indwelled, attention must be paid to the care of the puncture site to avoid infection with thrombus or catheter falling off.
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