Four Effective Ways to Improve Soil Fertility Plants and roots, soil, and soil organisms that grow on the ground are interdependent and interact with each other to form a soil ecosystem. Soil organisms are the most important and most active part of the soil biological system. They play
As the famous textile town of China, Qixian Town, Shaoxing County, Zhejiang Province, the presence of the National Textile Machinery Quality Supervision and Inspection Center will undoubtedly add new significance to this famous textile town. In May this year, the center successfully passed
Looking back on the past 2016, while the production and sales of the Chinese auto market exceeded 28 million units, the recall volume also exceeded 10 million for the first time. With such a large amount of recall and growth rate, what is the nature of the recall? Is it a fig leaf that covers the r
Dip [1~3,7,8] A wet process is the primary leach zinc refining. In this aspect of the process To feedstock zinc and tin and other valuable metals dissolved completely as possible, so that it goes into solution, in order to achieve high metal recoveries. On the other hand, at the end of the leachin
The application of cobalt minerals has a long history. Before the Era, the Egyptians used cobalt blue as a coloring agent for ceramic products. Since the Tang Dynasty, cobalt compounds have been widely used as colorants in ceramic production. In 1735, the Swedish chemist Brandt first isolated cobal
(1) Vertical disc vacuum filter The vertical disk vacuum filter, also known as the butterfly vacuum filter (Figs. 1 and 2), has a different filtering surface configuration than the cylindrical filter, but the operating principle is basically the same. The filtering surface is composed of a plu
Compared with the existing lithium-ion batteries, lithium-sulfur batteries using elemental sulfur as the positive electrode and lithium metal as the negative electrode have higher energy density, lower raw material cost and better environmental affinity. However, limited to the cycle life is too s
1. All equipment should be developed according to the actual situation after operation. 2. The overhaul plan includes overhaul, medium repair, minor repair, and equipment overhaul plan. Each workshop will make the next year's overhaul plan before December 20th of each workshop. The medium repa
In the past 100 years, flotation has made great achievements in the field of mineral processing , mainly relying on the special role of flotation reagents. Flotation agents can basically be divided into five categories: 1) Collector . It interacts with the surface of the mineral, and it adheres to
Model NO.: Hexagon socket countersunk flat cap head screw Grade: A2-70,A4-70 Materials: Stainless Steel 304,316
In 2015, many countries in the world experienced economic slowdown and negative growth. ContiTech, the global tire group of Tycoon Continental, achieved sales growth of 37%, and its sales increased from 3.9 billion euros in 2014 to 5.4 billion euros. Group President of ContiTech Division an
Refractory and low-grade gold ore processing technology, the Canadian company Barrick Gold metallurgy technology consultant Gupta comprehensive evaluation of the level of processing of technological development in this area. Gu Da said that the total cost allocation study shows that the mining cos