Melting of metals
阅读：741发布：2021-07-20
专利汇可以提供Melting of metals专利检索，专利查询，专利分析的服务。并且The invention relates to a process for melting and refining copper in a vertical furnace by direct contact of copper pieces with hot gases produced by combustion of a non-solid fuel with an oxygen-containing gas ignited before coming into contact with the copper pieces, the said gas being substantially neutral, the variation around the neutral point being such that the oxygen contents shall be lower than about 0.5 percent of O2 and the hydrogen contents shall be lower than about 0.5 percent of hydrogen, and the pressure being such that the ignited has leaving the burners shall be capable of piercing the liquid mass situated at the level of the burners.，下面是Melting of metals专利的具体信息内容。
1. A process for melting and refining copper in a vertical furnace zone which comprises: A. charging the copper pieces to be melted to the upper part of said vertical furnace zone; B. injecting a stream of hot gases into said vertical furnace zone through burners mounted along the perimeter of said vertical furnace zone; C. directly contacting said stream with said copper pieces to melt said pieces; D. said stream of hot gases originating from the combustion of a non-solid fuel with an oxygen-containing gas, and wherein said gas resulting from the combustion and ignited before coming into contact with the copper pieces, is a substantially neutral gas, the variation around the neutral point being such that the oxygen content is lower than about 0.5 percent of O2 and the hydrogen content is lower than about 0.5 percent of hydrogen; E. the pressure of said gas being such that the ignited gas leaving the burners shall be capable of piercing the liquid mass situated at the level of the burners; and F. discharging the molten material into a holding furnace zone through a tapping hole at the lower part of said vertical furnace zone, adjacent to the bottom of said vertical furnace zone; and wherein G. the pressure of the gas in the vertical furnace zone at the level of the burner and at the level of the tapping hole for the molten material is between 35 and 130 gr/cm2 so as to violently expel the molten material containing small pieces and unmolten slag from the vertical furnace zone.
2. A process as claimed in claim 1 in which the pressure of the ignited gas leaving the burners and injected into the vertical furnace zone is between 100 and 380 gr/cm2.
3. A process as claimed in claim 1 wherein the pressure of the ignited gas leaving the burners and injected into the vertical furnace zone is about 180 gr/cm2.
4. A process as claimed in claim 1 in which the non-solid fuel contains sulfur.
5. A process as claimed in claim 1 in which sand, silica or a silica containing compound are used for melting the copper pieces when impure copper rich in iron is treated.
6. A process as claimed in claim 1 in which the pieces of copper to be melted are stacked sufficiently high so that a high resistance to the upwards passage of the combustion gas is obtained.
7. A process as claimed in claim 6 in which the height of the stacked pieces of copper is of at least 6 meters.
8. A process as claimed in claim 1 in which the total heat output of the ignited gas injected into the vertical furnace zone is between 250 and 900 Kcal per Kg of copper.
9. The process of claim 1 wherein the molten material is caused to flow in the hearth zone of said vertical furnace zone towards the tapping hole at a slope adapted to the natural flow slope of the molten material and further comprising injecting stream of said hot gases into said vertical furnace zone through row of burners at the lower part of the vertical furnace zone wherein the plane containing the centers of the outlet orifices of the burners of said row of burners is inclined in the direction of the flow of the molten material in the hearth zone and remaining as near as possible above the upper edge of said tapping hole.
10. The process of claim 1 wherein the molten material is caused to flow in the hearth zone of said vertical furnace zone towards the tapping hole at an angle between 6* and 18*.
11. The process of claim 10 wherein said angle is 12*.
12. The process of claim 9 in which the distance between the lower edge of the openings for the burners of said row and the hearth zone of the furnace is between 3 and 10 cm.
13. The process of claim 9 wherein the ratio between the angle of slope of the horizontal line relative to the plane conTaining the centers of the outlet orifices of the burners of said row of burners and the angle of the slope of the flow of the molten material in the hearth zone towards the tapping hole is between 1 and 0.5.
14. The process of claim 1 which comprises injecting streams of said hot gases into said vertical furnace zones through four rows of burners and wherein the planes passing through the centers of the outlet orifices of the burners of the upper two rows of burners are horizontal.
15. The process of claim 1 which further comprises injecting stream of said hot gases through at least one burner directly into the tapping hole.
16. The process of claim 1 which further comprises conducting the molten material from the vertical furnace zone to two furnace zones whereby said molten material is subjected to an oxidizing-refining in one of said two furnace zones and whereby said molten material is subjected to poling in the other of said two furnace zones.
17. The process of claim 9 in which the streams of hot gases leave the burners in each row in a direction inclined relatively to the hearth.
| 标题 | 发布/更新时间 | 阅读量 |
|---|---|---|
| 一种可调节多种燃料进料比例的燃烧器 | 2020-05-11 | 170 |
| 一种带扩张段的轴切多旋流气液固多相流燃烧器 | 2020-05-15 | 302 |
| 多级流化床粉煤热解及除尘耦合制取煤焦油煤气的系统及方法 | 2020-05-12 | 112 |
| 固体燃料燃烧器 | 2020-05-08 | 215 |
| 一种可调节多种燃料进料比例的燃烧器 | 2020-05-15 | 107 |
| 用于固体燃料点火的系统、方法和装置 | 2020-05-11 | 643 |
| 固体燃料扩散燃烧精细化诊断燃烧器 | 2020-05-12 | 916 |
| 电炉用助燃燃烧器 | 2020-05-14 | 75 |
| 固体燃料粉碎装置及其控制方法 | 2020-05-15 | 434 |
| 一种自控高效固体燃料气化燃烧器 | 2020-05-13 | 541 |
高效检索全球专利专利汇是专利免费检索,专利查询,专利分析-国家发明专利查询检索分析平台，是提供专利分析，专利查询，专利检索等数据服务功能的知识产权数据服务商。
我们的产品包含105个国家的1.26亿组数据，免费查、免费专利分析。
分析报告
专利汇分析报告产品可以对行业情报数据进行梳理分析，涉及维度包括行业专利基本状况分析、地域分析、技术分析、发明人分析、申请人分析、专利权人分析、失效分析、核心专利分析、法律分析、研发重点分析、企业专利处境分析、技术处境分析、专利寿命分析、企业定位分析、引证分析等超过60个分析角度，系统通过AI智能系统对图表进行解读，只需1分钟，一键生成行业专利分析报告。
QQ群二维码
意见反馈
意见反馈