Vacuum melting ingot furnace for ingot casting of high-purity reduced germanium powder
By designing a vacuum melting ingot furnace, the problems of low single furnace output and high power consumption in the existing technology are solved, and efficient production of germanium powder ingots is achieved, which improves production efficiency and reduces energy consumption.
Patent Information
- Application Number
- CN202422443101.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-10-10
AI Technical Summary
The existing reduction furnace can only place one graphite boat, which results in a long process from high-purity germanium dioxide to high-purity germanium ingots, low yield per furnace and high power consumption.
A vacuum melting ingot furnace is designed, including a furnace body, a furnace cover, a vacuum pump and a graphite boat bracket. A vacuum furnace is installed in the furnace body, and the heating resistor belt is wound around it into a corrugated shape. There are channels and furnace cover lifting structures on the outside. The inner insulation furnace cover is connected to a double cold water sealing system to provide vacuum environment and temperature control, allowing multiple graphite boats to cast ingots at the same time.
It improves the efficiency of single ingots, shortens production time, reduces power consumption, and improves the output of a single unit.
Smart Images
Figure CN223216670U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of rare metal metallurgy, and in particular relates to a vacuum melting ingot casting furnace for high-purity reduced germanium powder ingot casting. Background Art
[0002] The extraction method of germanium is to first chlorinate the germanium concentrate with concentrated hydrochloric acid to obtain germanium tetrachloride, then use hydrochloric acid-chlorine distillation to remove the main impurity arsenic, and then purify it through distillation to obtain high-purity germanium tetrachloride. The high-purity germanium tetrachloride is then hydrolyzed to obtain high-purity germanium dioxide. The germanium dioxide is dried and calcined, and reduced with hydrogen at 650℃-680℃ in a quartz tube of a reduction furnace to obtain high-purity reduced germanium powder. The high-purity germanium is then obtained through ingot casting and zone melting processes.
[0003] The main steps in the current industrial production of germanium are: chlorination through a chlorination distillation reactor, distillation, back distillation, rectification and purification, hydrolysis, filtration, and drying to obtain high-purity germanium dioxide. Hydrogen is then introduced to reduce the germanium powder, and the reduced germanium powder is then heated to a high temperature to melt, and finally heated and solidified to obtain a germanium ingot.
[0004] The existing reduction furnace can only accommodate one graphite boat. The process from high-purity germanium dioxide to high-purity germanium ingots takes about 24 hours, which is relatively long and has low single-furnace output, wasting time and consuming electricity. Summary of the Invention
[0005] To address the aforementioned issues, the present invention provides a vacuum melting ingot casting furnace for high-purity reduced germanium powder ingots, comprising a furnace body, a furnace cover, a vacuum pump, and a graphite boat support. The furnace cover is mounted on the furnace body and is equipped with a water circulation pipe, an exhaust pipe, and a pressure gauge. The furnace body is a hollow cylinder with a vacuum furnace chamber disposed therein. The furnace body is equipped with an exhaust pipe connected to the vacuum pump. Corrugated heating resistor strips are arranged around the furnace body. Corrugated 0Cr25A15 resistor strips are used around the furnace body. An inner insulation furnace cover is installed within the furnace body and is connected to a dual-cold water sealing system. The dual-cold water sealing system, when connected to the inner insulation furnace cover, further prevents heat from escaping, helping to maintain a high temperature environment within the furnace. It also prevents gas leakage and outside air from entering the furnace, reducing the thermal effects of the furnace cover and furnace body at high temperatures and improving production safety.
[0006] Furthermore, a channel steel column is provided on the outside of the furnace body, the channel steel column is provided with a furnace cover lifting structure, and the channel steel column is connected to the furnace cover.
[0007] The above-mentioned technical solution of the present invention has the following beneficial technical effects: Placing multiple graphite boats and their supports within the vacuum furnace improves the efficiency of a single ingot casting and conserves electricity. Through its rational structural design, the present invention can fully melt the reduced germanium powder for ingot casting, significantly improving single-shot efficiency while reducing power consumption. The output per unit of the present invention significantly surpasses existing reduction ingot casting processes, shortening production time. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 This is a schematic diagram of the structure of a vacuum melting ingot furnace for high-purity reduced germanium powder ingots;
[0009] Figure 2 This is a top view of the graphite boat bracket.
[0010] Reference numerals:
[0011] 1: Furnace body; 2: Furnace cover; 3: Graphite boat bracket; 4: Water circulation pipe; 5: Discharge pipe; 6: Pressure gauge; 7: Vacuum furnace; 8: Exhaust pipe; 9: Heating resistor belt; 10: Graphite boat. DETAILED DESCRIPTION
[0012] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.
[0013] like Figure 1 and Figure 2 As shown, a vacuum melting ingot furnace for high-purity reduced germanium powder ingot casting is provided, comprising a furnace body 1, a furnace cover 2, a vacuum pump, and a graphite boat support 3. The furnace cover 2 is mounted on the furnace body 1 and is provided with a water circulation pipe 4, an exhaust pipe 5, and a pressure gauge 6. The furnace body 1 is a hollow cylinder with a vacuum furnace 7 disposed therein. The furnace body 1 is provided with an exhaust pipe 8 connected to the vacuum pump. The furnace body 1 is surrounded by a corrugated heating resistor 9. The corrugated 0Cr25A15 resistor band is used.
[0014] A channel steel column is provided on the outside of the furnace body, a furnace cover lifting structure is provided on the channel steel column, and the channel steel column is connected to the furnace cover.
[0015] The utility model can fully and effectively cast the reduced germanium powder into ingots through a reasonable structural design, provides a nitrogen atmosphere through an exhaust system, a pressure vacuum gauge, and circulating cooling water, ensures the pressure conditions required for the process, and accurately controls the temperature to meet the conditions necessary for the reaction. At the same time, due to the support design, more raw materials can be cast into ingots at one time, which greatly improves efficiency, reduces power consumption, and saves production costs.
[0016] It should be understood that the above-described specific embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the scope of protection of the present invention. In addition, the appended claims of the present invention are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents thereof.
Claims
1. A vacuum melting ingot furnace for high-purity reduced germanium powder ingot casting, characterized in that: It includes a furnace body, a furnace cover, a vacuum pump and a graphite boat bracket; the furnace cover is arranged on the furnace body, the furnace cover is provided with a water circulation pipe, and the furnace cover is provided with an exhaust pipe and a pressure gauge; the furnace body is a hollow cylinder, with a vacuum furnace chamber inside, the furnace body is provided with an exhaust pipe, and the exhaust pipe is connected to the vacuum pump; heating resistance belts are arranged around the furnace body and are wound into a corrugated shape.
2. The vacuum melting ingot furnace for high-purity reduced germanium powder ingot casting according to claim 1, characterized in that: A channel steel column is provided on the outside of the furnace body, a furnace cover lifting structure is provided on the channel steel column, and the channel steel column is connected to the furnace cover.