Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Solid-liquid double-phase copper alloy smelting covering agent and application thereof

A technology of copper alloy and covering agent, applied in the field of melt purification in copper smelting process, can solve the problems such as the need to improve the anti-oxidation and volatilization efficiency of the covering agent, and achieve the effects of reducing the amount of furnace ash, preventing sinking and simple preparation steps.

Active Publication Date: 2021-09-03
NINGBO CHANGZHEN COPPER CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to overcome the problem that the anti-oxidation and volatilization efficiency of the capping agent need to be improved in the prior art, and provides a solid-liquid two-phase copper alloy smelting covering agent and its application, so that the covering agent is in the solid-liquid state during the entire covering process. The two-phase state ensures that the lower layer of the covering agent is a liquid phase, directly in contact with the melt, preventing air from entering the melt, and preventing oxidation and volatilization of the copper alloy melt; the upper layer is a solid phase, which plays a role in covering the liquid phase, forming The solid protective layer, in addition to the decomposition of solid matter itself, can also react to generate gas carbon dioxide protective gas and float on the surface of the liquid layer, which is also convenient for final slag removal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Solid-liquid double-phase copper alloy smelting covering agent and application thereof
  • Solid-liquid double-phase copper alloy smelting covering agent and application thereof
  • Solid-liquid double-phase copper alloy smelting covering agent and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The application of the solid-liquid two-phase copper alloy smelting covering agent comprises the following application steps:

[0050] (1) Raw materials are prepared in proportion, Na 2 SiF 6 (purity≥98.5%): CaCO 3 (Particle size 100-500 mesh, whiteness ≥ 96%): NaCl (purity ≥ 92%) = 49.5%: 47.5%: 3%;

[0051] (2) Use a mixer to fully mix each raw material component to form a mixture;

[0052] (3) The mixture accounting for 0.25% of the total weight of the copper alloy melt is quantitatively sprinkled on the surface of the copper alloy melt in the casting furnace, and stirred, and the furnace temperature is maintained at 1000° C. to form a covering agent that continuously maintains the solid-liquid dual phase, and the copper The alloy melt was covered for 24 hours, the surface oxide ash in the furnace was collected, the sample was ball milled, washed and dried, and the proportion of the furnace ash and sand head was measured.

[0053] The casting furnace includes a f...

Embodiment 2

[0055] The application of the solid-liquid two-phase copper alloy smelting covering agent comprises the following application steps:

[0056] (1) Raw materials are prepared in proportion, Na 2 SiF 6 (purity≥98.5%): CaCO 3 (Particle size 100-500 mesh, whiteness ≥ 96%): NaCl (purity ≥ 92%) = 48%: 47%: 5%;

[0057] (2) Use a mixer to fully mix each raw material component to form a mixture;

[0058] (3) Quantitatively sprinkle the mixture accounting for 0.15% to 0.35% of the total weight of the copper alloy melt on the surface of the copper alloy melt in the casting furnace, and stir it to maintain the furnace temperature at 950°C to form a covering agent that continuously maintains the solid-liquid dual phase , Cover the copper alloy melt for 22 hours, collect the surface oxide ash in the furnace, take samples for ball milling, washing and drying, and measure the proportion of the furnace ash sand head.

[0059] The casting furnace includes a furnace body 1, and the furnace b...

Embodiment 3

[0061] The application of the solid-liquid two-phase copper alloy smelting covering agent comprises the following application steps:

[0062] (1) Raw materials are prepared in proportion, Na 2 SiF 6 (purity≥98.5%): CaCO 3 (Particle size 100-500 mesh, whiteness ≥ 96%): NaCl (purity ≥ 92%) = 51%: 48%: 1%;

[0063] (2) Use a mixer to fully mix each raw material component to form a mixture;

[0064] (3) Quantitatively sprinkle the mixture accounting for 0.15% to 0.35% of the total weight of the copper alloy melt on the surface of the copper alloy melt in the casting furnace, and stir it to maintain the furnace temperature at 1100°C to form a covering agent that continuously maintains the solid-liquid dual phase , Cover the copper alloy melt for 20 hours, collect the surface oxidation ash in the furnace, take samples for ball milling, washing and drying, and measure the proportion of the furnace ash sand head.

[0065] The casting furnace includes a furnace body 1, and the furn...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle size (mesh)aaaaaaaaaa
whitenessaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of melt purification in the copper smelting process, and discloses a solid-liquid double-phase copper alloy smelting covering agent and application thereof in order to solve the problem that in the prior art, the anti-oxidation and volatilization efficiency of a covering agent needs to be improved. The covering agent is prepared from the following raw materials in percentage by mass: 48-51% of Na2SiF6, 47-48% of CaCO3 and the balance of NaCl. A preparation method includes: preparing the raw materials; uniformly mixing; and scattering the mixture in a copper alloy melt casting furnace, stirring, keeping the furnace temperature at 900-1,100 DEG C, and forming the covering agent continuously kept in a solid-liquid double-phase state so as to cover a copper alloy melt. In the invention, the covering agent is in the solid-liquid double-phase state in the whole covering process so as to ensure that: the lower layer of the covering agent is a liquid phase and is in direct contact with the melt, then air is prevented from entering the melt, and the copper alloy melt is prevented from being oxidized and volatilized; and the upper layer of the covering agent is a solid phase and take effects of pressing and covering the liquid phase so as to form a solid protective layer.

Description

technical field [0001] The invention relates to the technical field of melt purification in copper smelting process, in particular to a solid-liquid two-phase covering agent for copper alloy smelting and its application. Background technique [0002] In recent years, the recycling, remelting and reuse of waste brass has attracted widespread attention from industry and science, mainly due to its good regeneration performance. Compared with primary copper materials, recasting scrap brass has more energy-saving, environmental protection and economic advantages; In addition, coupled with the lack of primary copper resources at home and abroad and the gradual depreciation and scrapping of the first batch of copper products 20 years ago, recycled copper will inevitably enter the stage of history in the future. Casting in industrial melting furnaces is an important processing method. Traditional single-body melting furnaces can no longer meet the needs of large-tonnage production. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22C9/00
CPCC22C1/06C22C9/00Y02P10/20
Inventor 宋卡迪黄腾王法超江溢川沈守稳刘伟郎滨
Owner NINGBO CHANGZHEN COPPER CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com