Compared with similar products at home and abroad, this series of equipment has significant technical advantages, which are mainly reflected in:
1. High gold desorption rate: the carbon-poor gold grade after desorption is less than or equal to 50g/t (the same industry products are generally less than or equal to 100g/t).
2. High primary electrolysis rate: the average electrolysis rate of desorption solution is ≥90%. (The products in the same industry are generally around 70%).
3. Accurate gold balance: the actual amount of gold obtained after desorption and electrolysis is consistent with the theoretical gold content in the gold-loaded carbon. (Products in the same industry generally have the phenomenon of "floating gold or accumulative funds", which causes the loss of gold in the processing process and makes the amount of gold unbalanced)
4. Efficient and easy to operate: The whole set of equipment adopts integrated design, signal acquisition, operation adjustment control and safety protection are automated to ensure high efficiency, easy operation, safety and reliability during the entire operation period.
5. Low operating cost: The equipment is made of real materials of special materials (mainly including high-quality insulation materials, all-tetrafluoroethylene insulation materials, fully imported aerospace-grade circulating pumps, high-resistance electric shock heating pipes, etc.). The power-consuming equipment adopts frequency conversion design to ensure the low cost of operation and maintenance while ensuring the desorption electrolysis index.
Carbon Desorption1,Electrolytic Refining Of Gold,Gold Mining Machine,Extraction Of Gold,Electrowinning For Gold Changchun Gold Research Institute Co.LTD , https://www.changchunmachine.com
A portable soil moisture meter was used to measure the soil moisture in the experimental area. It was found that the average withered humidity of 0-200 cm in the test area was 70.4 g/kg, and the average water holding capacity in the field was 152.5 g/kg, which was equivalent to that in 200 cm soil layer. The maximum effective water storage is 404.9mm. The average infiltration rate in the first 1 min measured in the field using a permeation canister method can reach 12 mm/min, and after 24 min, the infiltration can be basically achieved. The infiltration rate is 1.2 mm/min. This result is close to the soil infiltration rate measured in the Loess Plateau and belongs to a better type of permeability. This is closely related to the higher content of water-stable aggregates in 0-20 cm and 20-35 cm soil layers. The soil moisture content was measured with a portable soil moisture meter. The depth was 200 cm per 10 cm layer. The moisture data of 10 positioning observation points were analyzed and analyzed, and the variation law of soil moisture in the test area was obtained.
The change of surface soil moisture content was the largest, reflecting that precipitation and evapotranspiration had a greater impact on the surface soil moisture content, and less impact on the underlying soil moisture content change. It shows that precipitation and evapotranspiration have little effect on the soil moisture in the lower layer. Changes in soil moisture in different soil layers can be described by the coefficient of variation CV. We make a regression analysis of the average value of the coefficient of variation of the soil moisture content at different observation points with the depth of the soil profile, and conclude that the coefficient of variation CV decreases with the depth as a function of power.
The portable soil moisture measuring instrument also found that fertilization has a certain influence on the change of soil moisture. The soil moisture content of phosphate fertilizer treatment is lower than that of nitrogen fertilizer, indicating that the phosphate fertilizer promotes root development and enhances the absorption of soil moisture. Use has a special role. The soil water content after fertilization was significantly lower than that of the unfertilized soil. The soil moisture content of phosphate fertilizer treatment was significantly lower than that of nitrogen fertilizer soil. After fertilization, the degree of soil water use by plants increased.
Study on Variation of Soil Moisture in Wheat Field with Portable Soil Moisture Analyzer
The combination of atmospheric precipitation, crop evapotranspiration, and soil water movement creates a dynamic variation in soil moisture. It is necessary to describe the relationship between crop water yield and fertility and moisture. For this reason, it is very necessary and very meaningful to use the portable soil moisture measuring instrument to measure soil moisture.