Method and apparatus for using steel slag in cement clinker production
First Claim
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1. A method of cement clinker manufacture using an elongated rotary cement kiln having a feed-end and a heat-end, the heat-end being tilted downwardly with respect to the feed-end, the method comprising the steps of:
- directing heat from a heat source into said heat-end of the kiln;
introducing a stream of feedstock material containing lime into said feed-end of the kiln such that the stream of feedstock material moves toward said heat at the heat-end of the kiln; and
adding an amount of crushed and screened steel slag to said stream of feedstock material at said feed-end of the kiln, such that as the stream of feedstock material and steel slag moves toward said heat-end, the steel slag is melted by said heat and diffused into the feedstock material to form cement clinkers.
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Abstract
A process and apparatus by which steel slag can be added to the feedstock materials fed into the feed-end of a rotary cement kiln to form cement clinkers. The steel slag is crushed and screened to provide steel slag particles having a maximum diameter of 2".
37 Citations
7 Claims
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1. A method of cement clinker manufacture using an elongated rotary cement kiln having a feed-end and a heat-end, the heat-end being tilted downwardly with respect to the feed-end, the method comprising the steps of:
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directing heat from a heat source into said heat-end of the kiln; introducing a stream of feedstock material containing lime into said feed-end of the kiln such that the stream of feedstock material moves toward said heat at the heat-end of the kiln; and adding an amount of crushed and screened steel slag to said stream of feedstock material at said feed-end of the kiln, such that as the stream of feedstock material and steel slag moves toward said heat-end, the steel slag is melted by said heat and diffused into the feedstock material to form cement clinkers. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Litigation Data
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Current AssigneeEDW C Levy Company
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Original AssigneeTexas Industries Incorporated
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InventorsYoung, Rom D.
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Primary Examiner(s)Bell, Mark L.
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Assistant Examiner(s)MARCHESCHI, MICHAEL A
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Application NumberUS08/182,617Time in Patent Office508 DaysField of Search106/793, 106/757, 106/756, 106/758, 106/767, 106/789, 106/792, 106/791, 106/745US Class Current106/756CPC Class CodesC04B 7/147 Metallurgical slagC04B 7/36 Manufacture of hydraulic ce...Y02P 40/10 Production of cement, e.g. ...Y02P 40/121 Energy efficiency measures,...
