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Nickel oxide is an inorganic compound composed of nickel and oxygen, with the chemical formula NiO. Nickel oxide is insoluble in water and liquid ammonia, but soluble in sulfuric acid, nitric acid, hydrochloric acid and ammonia water. It has a cubic crystal structure, similar to sodium chloride, in which each nickel atom is surrounded by six oxygen atoms in close proximity, forming a regular octahedron with the nickel atom at the center. Due to the complex nature of nickel oxide ore, flotation is the main method for ore dressing. Currently, the common nickel ore flotation includes direct flotation, sulfide flotation and combined flotation.Details>>
Copper in copper-nickel ores mainly exists in the form of chalcopyrite, while nickel mainly exists in the form of free nickel sulfides such as pentlandite, pyrrhotite and pyrrhotite, and a considerable part of nickel is present in pyrrhotite in the form of "isomorphism", and there is also a small amount of nickel silicate. Sulfide copper-nickel ore types are mostly magma-melted copper-nickel ore, of which nickel content above 3% is rich ore and can be directly smelted, while nickel content below 3% requires ore dressing. Among the ore dressing methods, flotation is the main method, and gravity separation and magnetic separation are usually auxiliary.Details>>
The separation of copper and nickel can be carried out during the beneficiation and smelting process. Due to the high cost of smelting separation and many restrictions on conditions, the flotation method is basically used for copper-nickel beneficiation separation.The flotation of copper-nickel ore can be divided into four types: direct priority flotation, mixed flotation without separation, and mixed flotation followed by separation flotation.Details>>
The daily processing capacity of a copper-nickel sulfide mine is 1,500t. Since the establishment of the dressing plant, the flotation process has been used to separate nickel concentrate, and the tailings are directly discarded. However, due to the old process plan and unadvanced equipment in the early stage, the tailings were There are also quantitative nickel resources (containing 0.3% to 0.5% nickel) in the mine. In order to further improve the nickel ore resources, it was decided to re-separate the tailings of the ore dressing plant. Through the beneficiation test analysis of the nickel tailings, a process flow for re-selection and recovery of nickel was designed. Let’s work together. Learn about the program.Details>>
The mineral composition of nickel sulfide ore is complex and diverse, and the sulfide minerals are easy to oxidize and the gangue minerals are easy to mud, making ore dressing difficult. The flotation method is often used to complete the separation. In the flotation process, sulfide mineral collectors, pH adjusters, slurry dispersants, silicate mineral inhibitors, (magnetic) pyrite inhibitors, Ore dressing agents such as nickel mineral inhibitors and foaming agents, among which copper-nickel sulfide ore collectors and silicate mineral inhibitors are commonly used.Details>>
Laterite nickel is one of the main mineral resources for obtaining nickel. It has large reserves and is easy to mine. In the ore dressing process, the common laterite nickel beneficiation processing methods are fire treatment and wet treatment. Among them, the wet treatment process obtains nickel, which consumes less energy, causes less pollution, and has a higher recovery rate of nickel. At present, nickel ore wet treatment processes can include pressure acid leaching, normal pressure acid leaching, normal pressure + high pressure combined acid leaching, and reduction roasting-ammonia leaching. The following editor will focus on these methods. Introduction to help everyone understand more about the nickel ore wet beneficiation process.Details>>
Nickel has good ductility, corrosion resistance and magnetism. As a kind of metal mineral, nickel is used in steel, electroplating, aerospace materials, military materials and battery industries. The minerals from which nickel resources are currently available are mostly nickel oxide and nickel sulfide. Nickel sulfide (mostly copper-nickel sulfide ore) has relatively simple ore properties and its beneficiation method is relatively simple, mainly flotation, including There are several types of priority flotation, mixed flotation and mixed-prior flotation. Let’s learn about them with the editor below!Details>>
The formation of laterite nickel ore is mainly a water-containing oxide mineral formed due to climate changes (through rainforest, oxidation, etc.). According to the different compositions of nickel ore, it can be divided into two types: limonite-type nickel ore and magnesium-nickel ore. Let’s take a look at the characteristics of these two types of laterite nickel ores.Details>>
As a strategic resource, nickel is used in military, machinery, and aerospace manufacturing industries. It is mainly made from nickel ore through beneficiation, smelting and refining. Before this process, the nickel ore needs to be beneficiated into refined nickel sludge, and then smelted to obtain finished nickel metal. In the nickel ore beneficiation operation, it is inseparable from the grinding operation. It is necessary to use various grinding equipment to grind it to a certain particle size and then sort it. So what are the common nickel ore grinding equipment? Let’s find out together below!Details>>
As an important metal mineral resource, nickel is widely used in all walks of life. In terms of nickel ore beneficiation methods, flotation is often used as the main operation plan. During the beneficiation process, flotation is completed by adding different reagents in conjunction with a flotation machine. , so what are the common flotation equipment in nickel ore concentrators? Let’s introduce it below.Details>>
Mechanical agitator flotation machine is a type of flotation equipment. The main feature of this type of flotation machine is that it relies on a mechanical agitator to complete the flotation operation. What is a blender? In fact, it is the rotor stator. When the motor drives the gear, it forces the impeller, stator and rotor of the flotation machine to move. The centrifugal force and negative pressure generated in the process realize slurry suction and air suction (or inflation) operations. When fully mixed with the agent After the reaction occurs, the water-absorbing or hydrophobic minerals adhere to the bubbles and float up, completing the separation of minerals and gangue and achieving flotation.Details>>
The JJF type flotation machine is a mechanical agitation flotation machine equipment. A certain copper-nickel sulfide ore concentrator chose the jjf type flotation machine for the first time because of the transformation of the ore concentrator, and replaced the A-type flotation machine with the jjf-4 type flotation machine. Compared with the "A" type flotation machine, the JJF-4 type flotation machine has higher technical indicators such as nickel recovery rate and concentrate grade, and lower power consumption. Comprehensive consideration, the coarse and sweeping operations of the 1# system were " Technical transformation work to replace A” type flotation machine with JJF-4 type flotation machine.Details>>
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