SU1444383A1 - Method of producing cuprous phosphate - Google Patents

Abstract

The invention relates to the field of non-ferrous metallurgy and can be used to produce copper-phosphorus alloys. The purpose of the invention is to increase the yield of the product and reduce the content of impurities in it. Pel is achieved by improving the separation of the metal and slag phases and reducing the oxidation of the components of the mixture, which is ensured by the introduction of calcium and carbon phosphates into the mixture. The yield of metal is 1.3-1.4 times higher with a significant decrease in the sulfur content in the metal. 1 z.p- f-ly, 1 tab. with (L

Description

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The invention relates to non-ferrous metallurgy and can be used to produce copper-phosphorus alloys.

The known methods for producing phosphorous copper are characterized by the complexity and laboriousness of the process associated with aggressiveness and high elasticity of phosphorus vapors, which leads to significant losses, pollution of the environment and increased fire danger.

The purpose of the invention is to increase the product yield and reduce the content of impurities in it.

To determine the effectiveness of the proposed method for producing phosphorous copper, the following experimental melts were carried out.

Example T “The following materials were used as fir: phosphate production wastes of composition, va, wt,%: copper 77.7, phosphorus - 12.7, the rest silica, chlorides and fluorides of aluminum, magnesium, calcium and other elements 5 phosphorite flour and reducing agent - carbon in the form of activated charcoal brand BAU-10 in quantities of 5 and 3% by weight of the mixture, respectively. Melting was carried out in a laboratory furnace furnace of the SSOL type with a graphite crucible with a capacity of 1.0 kg under atmospheric conditions. The melt temperature was 1100 1200 C, Melting time 1 h. The composition of the resulting copper-phosphorus alloy is as follows, wt.%: Copper 90.2, phosphorus 7.8, sulfur 0.13, impurities else. The yield of metal was 60%.

Example 2. As the charge materials were used waste phosphorus production of the same composition, phosphorite flour and activated carbon, the latter two components were taken in quantities of 7 and 4% by weight of the mixture, respectively. Melting was performed in the specified furnace by the same method. At the same time, an alloy of copper - phosphorus of the following composition was obtained, wt.%: Copper 91.6, phosphorus 7.5, sulfur 0.2, impurities else. The yield of metal was 62% of the weight of the loaded mixture,

Example 3, 11 and their materials took the same composition, with the phosphate rock and activated charcoal injected in amounts of 10 and 5% by weight of the charge, respectively. Melting was performed under the same conditions using the same procedure. The resulting alloy had the following composition, wt.%:

copper 92.22, phosphorus 7.15, sulfur 0.15 ,. impurities rest. The yield of metal was 61%,

Example 4 In the smelting were used charge materials of similar composition, however, phosphate rock and activated: coal was taken in quantities of 15 and 6% by weight of the mixture, respectively. Melting was performed under the same conditions as indicated.

earlier method. The resulting alloy had the following composition, wt.%: Copper 91.7, phosphorus 6.7, sulfur 0.23, impurities rest. The yield of metal was 52%.

Example 5. Waste phosphate production was taken as blend materials, wt.%: Copper 76.0, phosphorus 11.2, the rest silicon dioxide, chlorides and fluorides

aluminum, magnesium, calcium, cottrels- to drink and ground graphite in quantities of 10 and 5% of the weight of the charge, respectively.

Melting was carried out in industrial

Induction furnace type ILT with a capacity of 200 kg (copper) o Melt temperature 1100-1200 ° С. The melting time on a cold furnace was 1.5 hours. The resulting alloy had the following composition:

mas%: copper 91.20, phosphorus 7.8, sulfur 0.44, impurities else. The yield of the metal was 70% by weight of the glutty

 Example 6 (known) As waste, only phosphate production waste of the following composition is taken, wt.%: Copper 80.0, phosphorus 10.1, the rest silicon dioxide, chlorides

and fluorides of aluminum, magnesium, calcium. Melting was carried out in a laboratory furnace furnace of the SSOL type with a graphite crucible with a capacity of 1.0 kg in a neutral argon gas medium. Argon was fed through a hose under a pressure of 1 atm for the whole melt. The melt temperature was 1100-1200 ° C. Melting time 1 h o The resulting alloy had a composition, wt.%: Copper 88.0, phosphorus 6.5,

sulfur 1.5, impurities else. The yield of metal was 45% of the weight of the charge.

The results of the examples are given in the table.

Comparison of the proposed method for the production of phosphorous copper with the known index shows that in the first case, the yield of a suitable metal increases by an average of 1.3-1.4 times, increases with the purity of the metal, including 4-5 times in sulfur content, and its phosphorus content increases by 10-15%

Claims (1)

Invention Formula 1 o Method for producing phosphorous copper, comprising melting waste Phosphate production dusts, characterized in that, in order to increase product yield and reduce impurities in it, phosphorus production wastes are melted with additions of 3.0-10 wt.% calcium phosphate and 3-5 wt.% carbon, 2o The method according to claim 1, characterized in that phosphate rock is used as calcium phosphate, monocalcium phosphate or cottal dust, and carbon is used in the form of activated carbon or graphite chips. Int. Order 6460/29 595 Random polygons pr-tie, Uzhgorod, st. Project, 4 Subscription