Protecting water resources, preventing water pollution and improving water environment ecology are important parts of environmental protection and sustainable development.

Most non - ferrous metals are metal sulfides ores, such as lead-zinc ore, copper sulfide, which often coexist with a large number of pyrites. Pyrite is the main raw material for industrial sulfuric acid, but China is a leading manufacturer and consumer of sulfuric acid, so the comprehensive utilization of pyrite plays an important role in lead-zinc tailings recovery.

Copper ore refers to the mineral aggregate with a certain content of copper ore and can be recycled at the present stage. In general, copper ore is occurred in ore inside as sulfide, and associated with a certain amount of lead and zinc ore.

The common copper sulfide minerals mainly include chalcocite, covellite, bornite, copper pyrites and tennantite, and their inherent floatability decrease in turn. Copper sulfide ore has better floatability than sphalerite, pyrite and other sulphide, so it is more likely to float from the pulp by adsorpting collecting agent.

Copper ore is a kind of high-grade sandy copper ore concentrate. It is widely used in casting, forging, metallurgy, paving, heat treatment, steel structure, space truss structure, ships, bridges, mines and so on

Copper sulfide ore has good inherent floatability, so flotation process is a mature method used for copper sulfide ore separation. In recent years, with the continuous development of copper sulphide flotation technology, many scholars also proposed a series of new principles of mineral processing, such as "collect early, loss early" and "more crushing and less grinding".

Molybdenum is widely used in steel, mechanical, electron and aerospace for its high melting point and good solidity. Molybdenum has a low grade of raw material (often is 0.01~0.4%), while high grade is demand in melting, so crushing is necessary.

The residence time in of hematite ore slurry in the flotation cell, reagent system and the adhesion process of bubble-particle. The article is going to introduce the effect of slurry concentration on mining hematite ore.

Nowadays, we have an increased demand for phosphate, and with the exploration of the phosphate-rich ore, there is less rich ore and more poor ore, it pushes the research and development of mining equipment and technology.

Quartz sand, also called silica sand, is a kind of non-metallic material that widely used in building materials, glass, ceramics, lasers, optical cables and electronics. In actual production, quartz sand can be obtained by grinding quartz ore or concentrating quartz sand ore.

Molybdenum is an important rare metal resource. And molybdenite (MoS2) is the most widespread among various molybdenum ores, almost 99% molybdenum production is obtained from molybdenite in the world.

Phosphorite often refers to phosphate mineral that can be recycled, and its grade is represented as W (P2O5) %.