Nickel is a silver-white metal, first separated in 1751 by the Swedish mineralogist AFCronstedt. Because it has good mechanical strength and ductility, is refractory to high temperatures, has high chemical stability, and is not oxidized in air, it is a very important non-ferrous metal raw material used to make stainless steel, High-nickel alloy steels and alloy structural steels are widely used in various military manufacturing industries such as aircrafts, radars, missiles, tanks, naval vessels, spacecraft, and nuclear reactors. In civil industries, nickel is often made into structural steels, acid-resistant steels, and heat-resistant steels, and used in a large variety of machinery manufacturing industries. Nickel can also be used as ceramic pigments and anti-corrosion coating. Nickel-cobalt alloy is a kind of permanent magnetic material widely used in electronic remote control, atomic energy industry and ultrasonic technology, etc. In the chemical industry, nickel is often used as a hydrogenation catalyst.
In recent years, the use of nickel in color televisions, tape recorders, and other communications equipment is also rapidly increasing. In short, due to its excellent performance, nickel has become an indispensable metal for the development of a modern aviation industry, a defense industry, and a modern system for the establishment of human high-level material and cultural life.
Characteristics of nickel ore raw materials Nickel is a pro-iron element and its content in the earth is second only to silicon, oxygen, iron and magnesium, ranking fifth. The highest nickel content in the core is natural nickel-iron alloys. In the earth's crust, the iron-magnesia rock contains more nickel than the silicon-aluminum rock. For example, the peridotite contains 1000 times more nickel than granite, and gabbro contains 80 times more nickel than granite.
About 50 kinds of nickel-containing minerals are known. Among them, sulfides, such as nickel pyrite and olivine nickel sulfides, exist in the form of free nickel sulfides, and a considerable part of nickel is present in pyrrhotite as an isomorphous material. In the nickel oxide ore, the nickel laterite ore has high iron content, low content of silicon and magnesium, and nickel content of 1% to 2%. The nickel silicate contains low content of iron, high content of silicon and magnesium, and nickel content of 1.6% to 4.0%. At present, the development and utilization of nickel oxide ore is dominated by nickel laterite ore, which is formed by the weathering of ultramafic rocks. Ni mainly exists in the form of nickel limonite (rarely crystallized to non-crystallized iron oxide).
Ni2+ is strongly thiophilic. In the early stage of crystallization of magma, the enrichment of nickel in the rock depends on the sufficiency of sulfur, given the certain nickel content. When there is enough sulfur, nickel and sulfur and sulfur-like substances (arsenic, antimony) form nickel-containing sulfides, which separate out before crystallization of silicic acid minerals to form nickel sulfur (or arsenic) compounds (such as needle nickel minerals, magnetic Pyrite, nickel pyrite, red arsenic nickel, arsenic nickel, nickel The so-called magnesium nickelite (nickel silicate nickel ore) is a general term for a series of mixtures of serpentine and clay minerals such as hydrogermanite and saponite, and some of them are replaced by nickel under oxidizing conditions. . Nickel oxide, like nickel sulfide, has now become an important source of nickel.
In recent years, the use of nickel in color televisions, tape recorders, and other communications equipment is also rapidly increasing. In short, due to its excellent performance, nickel has become an indispensable metal for the development of a modern aviation industry, a defense industry, and a modern system for the establishment of human high-level material and cultural life.
Characteristics of nickel ore raw materials Nickel is a pro-iron element and its content in the earth is second only to silicon, oxygen, iron and magnesium, ranking fifth. The highest nickel content in the core is natural nickel-iron alloys. In the earth's crust, the iron-magnesia rock contains more nickel than the silicon-aluminum rock. For example, the peridotite contains 1000 times more nickel than granite, and gabbro contains 80 times more nickel than granite.
About 50 kinds of nickel-containing minerals are known. Among them, sulfides, such as nickel pyrite and olivine nickel sulfides, exist in the form of free nickel sulfides, and a considerable part of nickel is present in pyrrhotite as an isomorphous material. In the nickel oxide ore, the nickel laterite ore has high iron content, low content of silicon and magnesium, and nickel content of 1% to 2%. The nickel silicate contains low content of iron, high content of silicon and magnesium, and nickel content of 1.6% to 4.0%. At present, the development and utilization of nickel oxide ore is dominated by nickel laterite ore, which is formed by the weathering of ultramafic rocks. Ni mainly exists in the form of nickel limonite (rarely crystallized to non-crystallized iron oxide).
Ni2+ is strongly thiophilic. In the early stage of crystallization of magma, the enrichment of nickel in the rock depends on the sufficiency of sulfur, given the certain nickel content. When there is enough sulfur, nickel and sulfur and sulfur-like substances (arsenic, antimony) form nickel-containing sulfides, which separate out before crystallization of silicic acid minerals to form nickel sulfur (or arsenic) compounds (such as needle nickel minerals, magnetic Pyrite, nickel pyrite, red arsenic nickel, arsenic nickel, nickel The so-called magnesium nickelite (nickel silicate nickel ore) is a general term for a series of mixtures of serpentine and clay minerals such as hydrogermanite and saponite, and some of them are replaced by nickel under oxidizing conditions. . Nickel oxide, like nickel sulfide, has now become an important source of nickel.