IPC분류정보
국가/구분 |
United States(US) Patent
공개
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0946264
(2013-07-19)
|
공개번호 |
US-0093600
(2014-04-03)
|
우선권정보 |
ZA-2008/06828 (2008-08-07) |
발명자
/ 주소 |
- HANNEMAN, Michael
- HESLOP, Roy William
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
0 |
초록
▼
A method of production of Zinc dust which includes melting Zinc products in a melting furnace on a semi-continuous basis, transferring at least a part of the molten Zinc products to a vaporizing furnace, vaporizing the molten Zinc in the vaporizing furnace into Zinc vapour on a substantially continu
A method of production of Zinc dust which includes melting Zinc products in a melting furnace on a semi-continuous basis, transferring at least a part of the molten Zinc products to a vaporizing furnace, vaporizing the molten Zinc in the vaporizing furnace into Zinc vapour on a substantially continuous basis, transferring Zinc vapour from the vaporizing furnace to a condenser, and condensing the Zinc vapour to form Zinc dust.
대표청구항
▼
1. A Zinc dust production plant, comprising: a vertical crucible melting furnace into which Zinc products are receivable;a vertical crucible vaporizing furnace into which molten Zinc products from the vertical crucible melting furnace are receivable via a dip tube with a top end of the dip tube bein
1. A Zinc dust production plant, comprising: a vertical crucible melting furnace into which Zinc products are receivable;a vertical crucible vaporizing furnace into which molten Zinc products from the vertical crucible melting furnace are receivable via a dip tube with a top end of the dip tube being in flow communication with molten material transport means and a bottom end of the dip tube opening into a lower portion of a vaporizing crucible; anda condenser in fluid flow communication with the vaporizing furnace for receiving Zinc vapour into the condenser, the condenser operable to condense the vaporized Zinc into Zinc dust. 2. The Zinc dust production plant of claim 1, further comprising molten Zinc material transport means in the form of a tundish and launder combination for transporting heated liquid material from a melting crucible, forming part of the vertical crucible melting furnace, to the vertical crucible vaporizing furnace. 3. The Zinc dust production plant of claim 1, wherein the vertical crucible melting furnace includes a refractory lining at least partially surrounding the melting crucible. 4. The Zinc dust production plant of claim 2, wherein the vertical crucible melting furnace includes a gas-fired burner in heat flow communication with an outside of the melting crucible. 5. The Zinc dust production plant of claim 2, wherein at least a portion of a melting crucible body is enclosed by the refractory lining, with the gas-fired burner being arranged in a chamber defined between the refractory lining and the melting crucible body. 6. The Zinc dust production plant of claim 2, further comprising manipulation means, for manipulating the vertical crucible melting furnace, in which the manipulation means is in the form of tilting means for tilting the vertical crucible melting furnace to cause liquid material in the vertical crucible melting furnace to flow from the melting crucible. 7. The Zinc dust production plant of claim 1, wherein the vertical crucible melting furnace includes pouring means in the form of a spout for directing liquid flow from the vertical crucible melting furnace. 8. The Zinc dust production plant of claim 1, wherein the vertical crucible vaporizing furnace includes a refractory lining at least partially surrounding a vaporizing crucible. 9. The Zinc dust production plant of claim 8, wherein the vertical crucible vaporizing furnace includes a gas-fired burner in heat flow communication with an outside of the vaporizing crucible. 10. The Zinc dust production plant of claim 9, wherein a portion of the vaporizing crucible may be enclosed by the refractory lining, with the gas-fired burner being arranged in a chamber defined between the refractory lining and the melting crucible body. 11. The Zinc dust production plant of claim 8, wherein a level above the bottom end of the dip tube defines an operative lower working level for molten material in the vaporizing crucible. 12. The Zinc dust production plant of claim 8, wherein the refractory lining encloses sides of the vaporizing crucible and a top cover that seals top ends of the refractory lining and the vaporizing crucible, thereby defining a burner chamber between the outside of the vaporizing crucible and an inside of the refractory lining and defining a vaporizing chamber inside the vaporizing crucible. 13. The Zinc dust production plant of claim 8, wherein the vertical crucible vaporizing furnace includes measurement means for measuring an amount of heated liquid in the vaporizing crucible. 14. The Zinc dust production plant of claim 13, wherein the measurement means is in the form of weight measurement means such as load cells onto which the vertical crucible vaporizing furnace is mounted. 15. The Zinc dust production plant of claim 14, wherein the measurement means is in the form of level measurement means, in which the level measurement means is in the form of a dipstick, protruding into the vaporizing crucible. 16. The Zinc dust production plant of claim 12, further comprising vapour transport means in the form of a crossover tube having at a first end an opening through the top cover of the vaporizing crucible and a second end leading into the condenser. 17. The Zinc dust production plant of claim 16, wherein the crossover tube includes a heating element. 18. The Zinc dust production plant of claim 1, wherein the condenser is defined by an enclosure of steel plate. 19. The Zinc dust production plant of claim 18, wherein the condenser includes a screw conveyor arrangement at a bottom of the enclosure, operable to extract solids collecting at the bottom of the enclosure. 20. The Zinc dust production plant of claim 18, wherein the condenser includes a vapour distribution manifold connected to a second end of the crossover tube, the vapour distribution manifold opening into the inside of the enclosure. 21. The Zinc dust production plant of claim 18, wherein the condenser includes a circulation system having an extractor at one end of the enclosure by means of which vapour may be extracted from the enclosure and an inlet at another end of the enclosure by means of which extracted vapour may be returned to the inside of the enclosure. 22. The Zinc dust production plant of claim 21, wherein the circulation system includes at least one cooling cyclone for cooling the vapour. 23. The Zinc dust production plant of claim 18, wherein the condenser includes an atmosphere control arrangement for controlling Oxygen content in the enclosure. 24. The Zinc dust production plant of claim 23, wherein the atmosphere control arrangement includes an Oxygen detector disposed in the inside of the enclosure, an inert gas purging arrangement, an air bleed arrangement and a processor controllably connected to the inert gas purging arrangement and the air bleed arrangement, operable, if the oxygen content exceeds a predefined level, to reduce the oxygen content in the enclosure by purging the inside with an inert gas from the inert gas purging arrangement and, if the oxygen content falls below a predefined level, to increase the oxygen content in the enclosure by opening the air bleed so as to form a thin oxide coating on the dust particle that renders it passive to any reaction.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.