During the heap leaching, some components of the ore are transferred to the dissolution process of the solution, so that there is a fouling component in the solution. This is only a prerequisite for scaling, and there must be fouling environment-external conditions to produce fouling. The external

With the advancement of science and technology and the development of the economy, the demand for copper products at home and abroad is growing. However, the rich ore and easy mining in copper mines around the world are gradually decreasing, and people's awareness of environmental protection is

The European Commission issued a report entitled "Materials for the Life and Death of the European Union", proposing early warning and countermeasures for the shortage of rare mineral raw materials in the EU. Based on the analysis of the economic impact and supply risks of 41 mineral reso

(February 13, 1982, promulgated by the State Council, implemented on July 1, 1982) Article 1 In order to supervise the implementation of the Mine Safety Regulations by mining enterprises, institutions and their competent authorities, the State implements a mine safety supervision system and sets u

On April 23, 2002, Altair Nanomaterials Inc. applied for a patent for invention. The process is neither a sulfuric acid production process, are not chlorinated production process, it should be said that the production of hydrochloric acid method process, the process as shown below: titanium iron or

2009 National iron ore output reached 88 0,171,400 t, an increase of 8.92%, an increase of the previous year dropped by nearly 12 percentage points. Hebei Province is a major province of iron ore resources, and iron ore production has been ranked first in the country since 1997. In 2009, the total

The current "mercury ore geological exploration" provides, for each type of exploration of the exploration project mercury pitch, the table below. Mercury deposit exploration engineering spacing table Exploration type Exploration engineering spacing (m) Class C D pole Exploration li

A scheelite is an ultra-poor porphyry scheelite deposit containing trace amounts of molybdenum minerals. The development of such extremely poor mineral resources should be based on the comprehensive recovery of various elements, which is not only the need to build resource-saving mines, but also Co

Hg (mercury, Hg), also known as the mercury is the only liquid at room temperature and flowable metal. The specific gravity is 13.595 and the specific gravity of the vapor is 6.9. Mercury is easily evaporated into the air and causes harm because: 1. It has evaporated at 0 °C. The higher the temp

Asphalt sprinkler principle Asphalt spreader is a kind of black road construction machinery. It is the main equipment for the construction of highways, urban roads, airports and port terminals. When the asphalt penetration method is adopted and asphalt pav

Photodynamic therapy (PDT) is a new cancer therapy that has gained much attention in recent years. This method is uniquely selective compared to traditional therapies. However, PDT photosensitive drugs (such as photoporphyrin) which are usually used in clinic effectively absorb light energy only i

Since 2012, natural rubber prices have gradually recovered, and the futures price has increased from 23,000-24,000 yuan at the beginning of the year to nearly 30,000 yuan now, and the spot price has also approached 30,000 yuan from 26,000-27,000 yuan. As the cost of natural rubber accounts f