Invention Grant
- Patent Title: Integrated process for the production of clinker with treatment of bypass dusts produced by the kiln
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Application No.: US14374187Application Date: 2013-01-29
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Publication No.: US10011527B2Publication Date: 2018-07-03
- Inventor: Roberto Fedi , Antonio Clausi , Giovanni Cinti
- Applicant: Italcementi S.p.A.
- Applicant Address: IT Bergamo
- Assignee: ITALCEMENTI S.P.A.
- Current Assignee: ITALCEMENTI S.P.A.
- Current Assignee Address: IT Bergamo
- Agency: Florek & Endres PLLC
- Priority: ITMI2012A0123 20120131
- International Application: PCT/EP2013/051605 WO 20130129
- International Announcement: WO2013/113664 WO 20130808
- Main IPC: C04B7/60
- IPC: C04B7/60 ; C05G3/00 ; C04B7/43 ; F27B7/20 ; F27D17/00 ; C04B7/36 ; C05D1/02 ; B01D53/77

Abstract:
It is described an integrated process for the production of clinker by dry process, with treatment in continuous of by-pass dusts produced by the kiln, wherein the solid matter to treat consists of bypass dusts of a clinker production process, containing compounds of chloride, sodium, potassium and sulphur, such a process comprising the following steps: a) extraction of the bypass dusts directly from the phase of quench, without intermediate storage, at a temperature comprised between 150 and 200° C., with a moisture content varying from 0.1 to 3% by weight, preferably from 0.1 to 0.5% by weight, and with a quantity of calcium carbonate lower than 55% by weight; b) mixing of said dusts coming from step a), within a maximum time comprised between 2 and 10 minutes, preferably lower than about 5 minutes, with water up to a water/dusts ratio varying from 2:1 to 4:1, preferably from 2.5:1 to 3.5:1, in a way to obtain a mixture with a moisture content comprised between 45 and 75% by weight, preferably between 50% and 55% by weight, even more preferably equal to about 50% by weight; c) mechanical stirring of the mixture diluted up to complete dissolution of the soluble salts; d) mechanical separation of the mixture so diluted in a liquid fraction containing water and soluble salts and in a solid fraction in form of cake or crust.
Public/Granted literature
- US20140345349A1 INTEGRATED PROCESS FOR THE PRODUCTION OF CLINKER WITH TREATMENT OF BYPASS DUSTS PRODUCED BY THE KILN Public/Granted day:2014-11-27
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