EP0283622A2
Expired / Lapsed
EP
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Cooling of molten media processes
Assignee: Dow Silicones Corp
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Filing: 1987-11-02
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Granted: —
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Expires: 2007-11-02
Abstract
Abstract An improvement to processes in which molten materials are handled at elevated temperatures is described. The improvement is the use of a polyorganosiloxane fluid as a cooling medium instead of water. This improvement eliminates the safety hazard of steam explosions which can occur when water is contacted with molten materials at elevated temperatures.
Inventors
- 👤 Gary Lee Gibson
- 👤 John Douglas Oleson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 09:39
CPC Classifications
F; F27; F27D; F27D9/00; C; C21; C21B; C21B7/00; C21B7/10
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
93 words
A process comprising (a) providing a molten medium, the molten medium being at a temperature greater than about 500°C.; (b) providing means for containing the molten medium; (c) using a heat transfer fluid for cooling the means for containing the molten medium; (d) providing means for removing heat from the heat transfer fluid; and (e) providing means for conveying the heat transfer fluid between the means for containing the molten medium and the means for removing heat from the heat transfer fluid, characterised in that the heat transfer fluid, is a polyorganosiloxane fluid.
Claim 2
Dependent Claim
93 words
A process comprising (a) providing a molten medium, the molten medium being at a temperature greater than about 500°C.; (b) providing means for containing the molten medium; (c) using a heat transfer fluid for cooling the means for containing the molten medium; (d) providing means for removing heat from the heat transfer fluid; and (e) providing means for conveying the heat transfer fluid between the means for containing the molten medium and the means for removing heat from the heat transfer fluid, characterised in that the heat transfer fluid, is a polyorganosiloxane fluid.
Claim 3
Dependent Claim
18 words
The process according to claim 1 wherein the molten medium is at a temperature greater than about 750°C.
Claim 4
Dependent Claim
18 words
The process according to claim 1 wherein the molten medium is at a temperature greater than about 1000°C.
Claim 5
Dependent Claim
25 words
The process according to any of claims 1 to 3, wherein the molten medium is a molten salt, a molten metalloid or a molten metal.
Claim 6
Dependent Claim
35 words
The process according to any of claims 1 to 3, wherein the molten medium is an alloy formed from a mixture of a molten metalloid and a molten metal or a mixture of molten metals.
Claim 7
Dependent Claim
73 words
The process according to any of claims 1 to 3, wherein the molten medium is a mixture selected from (i) a mixture of a molten metalloid oxide and a corresponding molten metalloid; (ii) a mixture of a molten metal oxide and a corresponding molten metal; (iii) a mixture of molten metalloid oxides, molten metal oxides, and a corresponding molten alloy; and (iv) a mixture of molten metal oxides and a corresponding molten alloy.
Claim 8
Dependent Claim
18 words
The process according to any of claims 1 to 6, wherein the polyorganosiloxane fluid is a polydiorganosiloxane fluid.
Claim 9
Dependent Claim
14 words
The process according to claim 7, wherein the polydiorganosiloxane fluid is a polydimethylsiloxane fluid.
Claim 10
Dependent Claim
15 words
The process according to claim 8, wherein the polydimethylsiloxane fluid is a trimethylsiloxy-endblocked polydimethylsiloxane fluid.
Claim 11
Dependent Claim
18 words
The process according to claim 9, wherein the polydimethylsiloxane fluid is a trimethylsiloxy-endblocked polydimethylsiloxane fluid containing heat-stablizing agents.
Claim 12
Dependent Claim
23 words
The process according to any of claims 1 to 10, wherein the viscosity of the polyorganosiloxane fluid is less than about 50 centistokes.
Claim 13
Dependent Claim
23 words
The process according to claim 11 wherein the viscosity of the polyorganosiloxane fluid is in the range of about 5 to 20 centistokes.
Claim 14
Dependent Claim
26 words
The process according to any of claims 6 to 12, wherein the metalloid, metal or alloy produced is selected from silicon, iron, aluminium, ferrosilicon and steel.
References Cited (Backward Citations)
No citation records indexed.
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