There are several types of fan fans for mine ventilatio…

Commonly used fan fans, in terms of its construction, there are two types of centrifugal and axial flow. The centrifugal fan is shown in Figure 1. When the working wheel rotates inside the spiral casing, due to the centrifugal force generated by the blade, a low pressure region appears in the cent ...MORE...

Anshan type lean magnetite sorting process

Anshan Type Lean magnetic iron ore plays an important role in China's iron ore resources, is the main target magnetic separation. BX below in connection with its introduction Nanfen beneficiation plant sorting process to be used. Ore nature The ore widely treated by Benfen Nanfen Mineral Proc ...MORE...

Experimental report on oxidation ore of lead-zinc ore i…

Report Title: Nanzheng County of Shaanxi Province to lead zinc ore oxide ore optional test study report format: word Completion time: 2007 12 Publisher: Guo Changqing guidance of experts: exchanging views Gong Meiling Gu Zhong-xiang Project Leader: Lee Tin report Pages: 26 Total starts Foreword ...MORE...

Leaching vanadium from LD slag with sulfuric acid

For the extraction of vanadium from the LD (Linz-Donawitz) converter slag of the steelmaking plant, M.Aarabi-Karasgani et al. studied an alkaline roasting-acid leaching process and determined the influence of various influencing factors on the dissolution kinetics of vanadium. The slag was analyzed ...MORE...

Processing and preparation of tantalum

Ancient charcoal reduction bismuthinite Bi 2 S 3 made of bismuth, 1737 J. Errol decomposition bismuth mine fire, get a small piece of metal bismuth; 1757 CJ days Fu Luwa France with charcoal reduction bismuthinite Metal bismuth is also produced. Its name comes from the German mineral name, meaning ...MORE...

New National Standard Brings Market Opportunity for Hyd…

As an advanced vehicle-assisted brake device, hydraulic retarder is widely used in Europe and the United States and other developed countries and regions. In China, due to factors such as customer awareness and product cost, the promotion effect is not satisfactory. However, after the officia ...MORE...

The continuous transformation of small grain dryers con…

Technology is the first productive force and it is a universal truth. The same is true for agricultural production. The high-speed development in various fields in China has promoted the efficiency of China's production fields in these years, and the agricultural sector has taken the lead. For e ...MORE...