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Tin bronze smelting slagging constituent and application method thereof

A slag-forming agent and a technology for tin bronze are applied in the field of slag-forming agents that can reduce the loss of copper in the smelting process of tin bronze, can solve problems such as high smelting temperature, and achieve the advantages of improving copper yield, improving slag accumulation effect, and improving economic benefits. Effect

Active Publication Date: 2014-08-13
JINTIAN COPPER GROUP CORP NINGBO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since tin bronze requires a higher smelting temperature, the high temperature during the smelting process causes the formed copper oxide to float on the surface of the copper melt in liquid form and be discarded together with the slag condensation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Throw 300kg of waste red copper, 1200kg of QSn6.5-0.1 scrap, 300kg of QSn6.5-0.1 white plating waste, and 200kg of QSn6.5-0.1 billet milling chips into the melting furnace for melting. After the raw materials are melted, the copper The composition of the alloy melt is tested, and according to the composition requirements of the QSn6.5-0.1 product grade, an appropriate amount of tin and phosphorus are added, (the tin is put in the form of tin ingot, and the phosphorus is put in the form of phosphor-copper alloy). After the QSn6.5-0.1 grade is required, control the temperature of the melt at 1200°C (the amount of copper alloy melt is about 2 tons), add 1kg of copper reduction slagging agent containing 5% by weight of charcoal powder and 95% by weight of glass powder, and stir slightly After uniformity, add 1 kg of perlite powder slag accumulator, and then stir gently to make the floating objects on the copper alloy melt quickly gather into large blocks, and then remove the...

Embodiment 2

[0017] Throw 500kg of waste red copper, 1300kg of QSn4-0.3 grade scraps, and 200kg of QSn4-0.3 billet milling chips into the melting furnace for smelting. According to the composition requirements of the grade, add an appropriate amount of tin and phosphorus (the tin is put in the form of tin ingot, and the phosphorus is put in the form of phosphorus copper alloy). After the composition test of the copper alloy melt meets the requirements of the QSn4-0.3 grade, the temperature of the copper liquid is controlled at 1220°C ( The amount of copper alloy melt is about 2 tons), add 1 kg of copper reducing agent containing 8% by weight of charcoal powder and 92% by weight of glass powder, stir slightly, then add 1 kg of perlite powder slag accumulator, and stir slightly again , so that the floating matter on the copper alloy melt quickly gathers into a large block, and then removes the block with a slag scoop to obtain about 12 kg of slag. The salvaged slag was crushed, washed and so...

Embodiment 3

[0019] Throw 300kg of waste red copper, 1450kg of QSn6.5-0.4 scrap, 100kg of QSn6.5-0.4 white-plating waste, and 150kg of QSn6.5-0.4 billet milling chips into the melting furnace for melting. After the raw materials are melted , to test the composition of the copper alloy melt, according to the composition requirements of the QSn6.5-0.4 product grade, add an appropriate amount of tin and phosphorus, (the tin is put in the form of tin ingots, and the phosphorus is put in the form of phosphorus copper alloy) and the copper alloy melt After the composition test meets the requirements of the QSn6.5-0.4 grade, control the temperature of the copper liquid at 1200°C (the amount of copper alloy liquid is about 2 tons), and add a reducing slagging agent containing 5% by weight of charcoal powder and 95% by weight of glass powder. kg, after stirring slightly evenly, then add 1.2kg of perlite powder slag accumulator, and then stir slightly evenly, so that the floating objects on the coppe...

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Abstract

A tin bronze smelting slagging constituent includes a copper reduction slagging constituent and a slag conglomeration agent. The copper reduction slagging constituent is composed of 3-10 wt.% of charcoal powder and 90-97 wt.% of glass powder, and slag conglomeration agent consists of crushed crude pearlite. The application method is as below: in the melting process of tin bronze alloy, after qualification test of copper alloy melt composition, controlling the temperature of copper liquid at 1150-1250 DEG C, first adding glass powder containing charcoal powder and as reducing the slagging agent, adding 0.01-0.1% of the weight of the copper alloy melt, the copper alloy melt stirring after the addition of perlite powder, slag conglomeration agent, adding 0.01-0.2% of the weight of the copper alloy melt, then slightly and evenly stirring, so as to quickly conglomerate dross on the copper alloy melt in bulk, and fishing out the bulk by using a slag spoon. The smelting slagging constituent reduces the content of copper oxide and cuprous oxide in slag, and improves the slag conglomeration effect of perlite powder. Compared with the existing technology, the method reduces the copper content in the slag by more than 40%, greatly increase the copper rate in tin bronze smelting, and has good economic benefit.

Description

technical field [0001] The invention belongs to the technical field of copper alloy smelting, and relates to a slagging agent for tin bronze smelting and a using method thereof, in particular to a slagging agent capable of reducing copper loss in the tin bronze smelting process and a using method thereof. Background technique [0002] Copper is a non-ferrous metal closely related to human beings, and is widely used in electrical, light industry, machinery manufacturing, construction, national defense and other fields. Among many copper alloy products, tin bronze is often used to produce castings with complex shapes, clear outlines and low airtightness requirements due to its minimum casting shrinkage. In addition, due to its exceptional corrosion resistance in the atmosphere, seawater, freshwater and steam, it is widely used in high-demand castings such as steam boilers, sea-going ship parts, valves and instruments. [0003] my country began to manufacture bronze as early a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22C9/02
Inventor 傅杰唐文豪洪燮平张翼
Owner JINTIAN COPPER GROUP CORP NINGBO
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