Why is iron slag added when smelting copper? The converter copper smelting needs to pour the slag se

The meaning of adding iron slag when smelting copper is to put the iron sheet into the copper sulfate solution or other copper salt solution, which can replace the elemental copper, which is the pioneer of modern hydrometallurgy.

Wet copper smelting, also known as the bile copper method, mainly includes two steps, one is copper immersion, iron is placed in the solution of bile alum, so that the copper ions in the bile alum are replaced by iron into elemental copper deposited; The second is to collect the replaced copper powder and smelt it.

Because he needs to produce some reactions when refining, and add an appropriate amount of iron slag, it can reduce its temperature and ensure its temperature balance, otherwise the internal temperature is too high, the external temperature is too low, and its temperature difference is relatively large, which will lead to failure.

After adding it, the application range is wider and the value is higher! The alloy that came out is more easy to use!!

A small amount of rare earth can refine the copper-iron alloy, and the melting temperature of copper and iron is not much different, both are about 1200 degrees, and they are completely compatible. It has excellent electrical conductivity, thermal conductivity, ductility and corrosion resistance, combining the advantages of copper and iron.

When striking iron, the iron is pure iron. The outer layer that falls is because the iron reacts with oxygen at high temperatures, and the iron filings that fall off form ferric tetroxide with oxygen.

Because the raw materials for copper smelting are chemical compounds, copper smelting is generally replaced with iron slag to obtain pure copper.

Summary. Normally, converter copper smelting needs to pour 2-3 times of slag to remove different kinds of slag and impurities, so as to obtain copper with higher purity.

Normally, converter copper smelting needs to pour 2-3 times of slag to remove different kinds of slag and impurities, so as to obtain copper with higher purity.

Fellow, I really didn't understand, I can be more specific.

Converter copper smelting is the process of adding copper concentrate and other auxiliary materials with high copper content to the furnace for smelting and processing. In the furnace, oxides and silicic acid will be formed, which need to be poured out to ensure the quality of smelting. The specific number of slag pours needs to be determined according to the size of the furnace, the amount of charging, the furnace temperature, the melting time and other factors.

Normally, converter copper smelting needs to pour 2-3 times of slag to remove different kinds of slag and impurities from Jingchun, so as to obtain copper with higher purity.

Contains copper slag, which contains copper in the residue of the substance after refining or use. Copper slag is a kind of non-ferrous metal slag produced in the process of copper smelting. The sulfur content of copper-containing slag material is low, and the sulfur grade fluctuates greatly, so the smelting flue gas is not suitable for acid production, and the desulfurization harmless treatment process can be adopted.

With the continuous development of copper metallurgy technology, the traditional copper smelting technology including blast furnace smelting, reverberatory furnace smelting and electric furnace smelting is gradually being replaced by flash smelting. Slags with high copper content (especially slags with high arsenic and other harmful elements) such as smelter converters and flash smelting are difficult to return and process, and these materials often need to be processed in open circuits.

The main components of copper smelting slag are iron silicate and magnetic iron oxide, and the amorphous glass body composed of olivine (2FeO·SiO2), magnetite (Fe3O4) and some gangue stones. Mechanical entrainment and physicochemical dissolution are the two forms of metal loss in slag. Generally speaking, the loss of copper in the slag increases with the increase of the oxygen potential, matte grade, and Fe SiO2 ratio of the slag.

The copper in the smelting slag mainly exists in the state of matte copper or simple chalcoccite (Cu2S), which contains almost no metallic copper, and the sulfides of copper are mostly discontinuously distributed in the form of fine beads and droplets, and are intertwined between olivine and glass. However, there is a small amount of metallic copper in the blowing slag, and the Cu2S content also increases in the slag with high copper content. Due to the large amount of Fe3O4 generated during the smelting process, the viscosity of the slag increases, and the difference in the specific gravity of the slag matte decreases, so that the slag matte cannot be effectively separated.

Copper minerals are mostly surrounded by magnetic iron oxide and present a drop-like structure, and copper and iron minerals form a porphyry structure in the olivine matrix, or several copper minerals are embedded and symbiotic, and cobalt and nickel mainly exist in the form of oxides in the slag. However, due to its low content, X-ray diffraction cannot confirm the presence or absence of individual minerals. Scanning electron microscopy spectroscopy or X-ray spectroscopy can detect cobalt and nickel, mainly distributed in magnetic iron compounds and iron silicates, and exist as ferrous silicates or silicates.

The size, degree of self-forming, interrelationship and distribution of elements in each phase of the slag are also related to the cooling mode of the slag. In the process of slow cooling, the initial crystallites of the slag melt can grow normatively through dissolution-precipitation, and the crystallization is good.

Copper and iron are reduced from copper ore and iron ore respectively, and commonly used iron ores are: magnetite (Fe3O4), hematite (Fe2O3), siderite (FeCO3), pyrite (Fes2).

When making iron, iron ore powder is mixed with coke powder and limestone powder and heated, and the reaction is as follows:

Copper ore mainly includes malachite (Cu2(OH)2CO3, the principle is the same as above.

There are many kinds of copper smelting processes, and there are many kinds of smelting slag, sulfide ore is mainly divided into smelting slag, blowing slag, and refining slag if it is smelted by matte; Water slag produced by oxide ore reduction smelting.

Secondly, it depends on what form of iron exists in the slag, and the content thereof, if the iron content is more than 30% and exists in the form of magnetite, you can further carry out magnetic separation to separate the iron concentrate, if the magnet content is less than 20%, then there is no greater significance, of course, if there are other iron concentrate concentrators, you can participate in a certain ratio, so that the iron concentrate content can reach more than 60%.

If there is no iron concentrate concentrator, it depends on the content of other valuable metal elements contained in the slag weight, such as copper, gold, silver, arsenic, antimony, bismuth and other elements. If not, it can only be sold to some brick factories or ships for rust removal.

Completely self-created, absolutely no paste, hope.

First, it depends on the form in which iron exists, and if it exists in the form of silicate, it has no value.

Second, it depends on whether there is copper and how high the content is.

Hello, where is this scum?