Claims
- 1. A one-stage continuous method for the direct production of industrial lead oxide, wherein molten lead is continuously fed into a reactor and is stirred therein at a pre-determined reaction temperature greater than 500.degree. C. up to 640.degree. C., and the resulting reaction product is drawn off continuously, and wherein the product exhibits a PbO content of substantially more than 99%, comprising
- feeding the lead flow in a constant and even manner by introducing the molten lead into the reactor at a temperature close to and not more than 50.degree. C. lower than the pre-determined reaction temperature, via a nozzle from a vessel in which the molten lead level is held constant, and
- maintaining the reaction temperature level within .+-.5.degree. C. of the pre-determined reaction temperature, said reaction temperature level being maintained by maintaining a continuous flow of heated air to said reactor at a substantially constant rate and, when said temperature level varies, correcting said temperature by slightly varying only the air flow.
- 2. A method according to claim 1 wherein the temperature of the reaction is fixed at a value of approximately 600.degree. C.
- 3. A method according to claim 1 wherein said product has a PbO content of 99.7-99.8% and a maximum particle size of 60 .mu.m.
- 4. Method according to claim 1, wherein the pre-determined reaction is set at about 600.degree. C.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3016984 |
May 1980 |
DEX |
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Parent Case Info
This is a continuation of application Ser. No. 258,013 filed Apr. 27, 1981, abandoned.
US Referenced Citations (6)
Foreign Referenced Citations (7)
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328044 |
Jun 1943 |
DE2 |
1467347 |
May 1971 |
DEX |
1209179 |
Dec 1971 |
DEX |
391612 |
Jul 1951 |
FRX |
400270 |
Jun 1952 |
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1414313 |
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1364391 |
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GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
258013 |
Apr 1981 |
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