CN106702175A

CN106702175A - Composite refining agent of scrap copper

Info

Publication number: CN106702175A
Application number: CN201510415912.XA
Authority: CN
Inventors: 潘宝安
Original assignee: Tianjin Cheng Tai Former Copper Co Ltd
Current assignee: Tianjin Cheng Tai Former Copper Co Ltd
Priority date: 2015-07-15
Filing date: 2015-07-15
Publication date: 2017-05-24

Abstract

A composite refining agent of scrap copper comprises, by mass, 3-4% of jade powder, 2-3% of titanium dioxide, 4-8% of magnesia, 10-14% of quartz sands, 8-12% of sodium carbonate, 8-12% of fluorite, 15-20% of rare earth elements RE, 1.0-3.0% of B, 1.0-3.0% of Mg, and the balance of copper. The composite refining agent has the advantages of uniform components, full contact with melt, guaranteeing of effective removal of lead, tin and iron through comprehensively utilizing quartz sands for removing lead, sodium carbonate used for removing tin and the super strong action of rare earth and nonmetals and metals, ensuring of individual action and cooperation of all components of the refining agent under the assistance of magnesia for refinement and deoxidation and fluorite for improving the fluidity, and provision of guarantee for the production of oxygen-free copper.

Description

A kind of copper scap composite refiner

Technical field

The present invention relates to the manufacture field of metal alloy compositions, especially a kind of copper scap composite refiner.

Background technology

At present, the production of domestic oxygen-free copper makees raw material using the tough cathode of high-quality mostly, the method production oxygen-free copper power consumption is high, Cost is big.In addition China's copper resource is in short supply, and the tough cathode of high-quality cannot meet industrial demand.In order to solve tough cathode The problem of limits throughput, makes full use of resource, and China increases the regeneration to copper scap.

Generally, the technique for producing oxygen-free copper indirectly with copper scap is：Anode copper is smelted into first, then through being electrolyzed to produce the moon Used after the copper of pole.This indirect utilization complex procedures, cycle long, high energy consumption and cause environmental pollution.For materials saving, Oxygen-free copper producer starts with bright copper rice for raw material produces oxygen-free copper and successful.But due to bright copper rice high cost, and The high-quality bright copper rice in domestic market is in short supply, and for further reduces cost, many producers attempt to be added in bright copper rice A certain proportion of copper scrap line.Found through production practices, the method is although feasible, but the ratio of addition copper scrap line is very low (general The quality for adding copper scrap line is the 10-15% of copper-containing raw material).Generally, No. 2 copper rice (its criteria for classification is ISRI criteria for classifications) With in copper scrap line containing several in the metal such as aerobic, sulphur, tin, tellurium, bismuth, lead, aluminium, iron, zinc and nonmetallic inclusion, if Copper scrap line excessive addition slightly, its impurity for introducing will make product coarse grains, tissue thin wheel, stomata occur, be mingled with Defect.These defects can not only reduce electric conductivity, ductility and the tensile strength of copper, it is also possible to causing copper bar when serious Split and cause to be introduced through cannot continuing for journey in the upper process interrupt that draws.The impurity for introducing is added in order to remove copper scrap line, it is existing Technology is typically to add a kind of refining agent in melting, but because impurity element species is more, single refining agent is difficult to reach effectively The purpose of removal of impurities, causes refining effect limited.

In the prior art, the relevant report of existing copper scap refining agent, such as Chen Yisheng exists《Recycled copper regeneration is answered Close the development and application of refining agent》In just describe the composite refiner containing rare earth, composition be mainly carbonated rare earth, calcirm-fluoride, Sodium carbonate, Boratex are dilute with copper because carbonated rare earth and Boratex catabolite are mainly rare earth oxide and boron oxide Native alloy is compared with Cu-B alloy, and its deoxidation and purification capacity are substantially reduced, iron, nickel removal effect it is poor, and this is compound Salts substances ratio and particle size are clearly in refining agent；Patent《A kind of recycled copper refining agent and preparation method thereof》 [201310025569.9] in, it was recently reported that its develop refining agent be a kind of multicomponent alloy, chemistry turn into predominantly copper, boron, Magnesium, rare earth, the refining agent can effectively remove the impurity in copper scap, especially can effectively remove nickel, but some impurity such as lead And tin, in addition to rare-earth action, can also cannot effectively be removed only by rare earth with oxygen effect production oxide；Patent 《A kind of production method of high purity copper and low oxygen glitter copper lever》[200810023701.1] one kind is described in exist with containing copper mass More than 90% copper scap is the method that raw material produces high purity copper and low oxygen glitter copper lever, wherein mainly utilizing quartz sand and dioxy SiClx removes impurity lead, and other impurities are difficult to remove, simultaneously because the addition of quartz sand also results in Si in products therefrom The increase of content.In addition, the addition of quartz sand is relatively obscured in that patent.

In sum, existing copper scap refining techniques, it is impossible to targetedly deoxidation, desulfurization and removal iron, lead, tin Deng impurity, oxygen-free copper bar is produced as raw material particular for the copper scap containing No. 2 copper rice and copper scrap line typically without a kind of technology In the problem that runs into, effectively remove the impurity such as deoxygenation, iron, lead, tin, phosphorus, improve the adding proportion of copper scrap line.Therefore, To utilize copper scrap line to greatest extent, shorten copper scap regeneration flow, it is necessary to solve the impurity brought into during copper scrap line melting Problem, to reach reduction production cost, improves the purpose of the competitiveness of the regeneration and product of copper resource.

The content of the invention

It is an object of the invention to overcome the deficiencies in the prior art part, there is provided it is a kind of with more superior tensile property and A kind of very corrosion resisting copper alloy material of strong corrosion resistant.

The present invention realizes that the technical scheme of purpose is：

A kind of copper scap composite refiner, by percentage to the quality including following components：Jade powder 3-4%；Titanium dioxide 2-3%； Bitter water chestnut soil 4-8%；Quartz sand 10-14%；Sodium carbonate 8-12%；Fluorite 8-12%；Rare earth elements RE 15-20%； B 1.0-3.0%；Mg 1.0-3.0%；Balance of copper.

And, the rare earth elements RE is selected from least one in La, Ce, Y, Pr, Nd.

And, the quartz sand is 50-70 mesh more than or equal to 99.8%, particle size from dioxide-containing silica.

And, the sodium carbonate is 60-80 mesh from particle size.

And, Calcium Fluoride Content is more than or equal to 99% in the fluorite, and granular size is 80-100 mesh.

The advantages of the present invention are：

Composite refiner composition of the present invention is uniform, with melt contacts fully, both fully utilized quartz sand except lead, sodium carbonate except tin, Rare earth and the superpower effect of nonmetallic and metal, it is ensured that lead, tin, effective removal of iron, are aided with boron magnesium refinement deoxidation again, The effect of the improvement mobility of fluorite, it is ensured that refining agent each component independent role simultaneously again coordinated, be oxygen-free copper production There is provided guarantee.

Specific embodiment

Below by specific embodiment, the invention will be further described, and following examples are descriptive, be not it is limited, Protection scope of the present invention can not be limited with this.

Unless otherwise specified, the reagent used in the present invention is conventional reagent；Unless otherwise specified, the method for being used is normal Rule method.

Embodiment 1

A kind of copper scap composite refiner, by percentage to the quality including following components：Jade powder 3%；Titanium dioxide 2%；Bitter water chestnut Soil 4%；Quartz sand 10%；Sodium carbonate 8%；Fluorite 8%；Rare earth elements RE 15%；B 1.0%；Mg 1.0%；It is remaining It is copper to measure.

Embodiment 2

A kind of copper scap composite refiner, by percentage to the quality including following components：Jade powder 4%；Titanium dioxide 3%；Bitter water chestnut Soil 8%；Quartz sand 14%；Sodium carbonate 12%；Fluorite 12%；Rare earth elements RE 20%；B 3.0%；Mg 3.0%； Balance of copper.

Claims

1. a kind of copper scap composite refiner, it is characterised in that：Include following components by percentage to the quality：Jade powder 3-4%； Titanium dioxide 2-3%；Bitter water chestnut soil 4-8%；Quartz sand 10-14%；Sodium carbonate 8-12%；Fluorite 8-12%；Rare earth element RE 15-20%；B 1.0-3.0%；Mg 1.0-3.0%；Balance of copper.

2. a kind of copper scap composite refiner according to claim 1, it is characterised in that：The rare earth elements RE is selected from At least one in La, Ce, Y, Pr, Nd.

3. a kind of copper scap composite refiner according to claim 1, it is characterised in that：The quartz sand selects titanium dioxide Silicone content is 50-70 mesh more than or equal to 99.8%, particle size.

4. a kind of copper scap composite refiner according to claim 1, it is characterised in that：The sodium carbonate selects particle chi Very little is 60-80 mesh.

5. a kind of copper scap composite refiner according to claim 1, it is characterised in that：Calcium Fluoride Content in the fluorite More than or equal to 99%, granular size is 80-100 mesh.