Co-production of cementitious products
First Claim
1. A method of thermally reacting one or more inorganic materials at a predetermined reaction temperature comprising:
- (a) maintaining a flame in a combustion zone at said predetermined reaction temperature by passing effective combustion quantities of a fluid stream comprising a hydrocarbon fuel and oxygen into said flame;
(b) comminuting said inorganic materials to a predetermined particle size sufficient to be transported by gas flow; and
(c) suspending said comminuted particles of said inorganic compounds in intimate contact with said hydrocarbon fuel and said oxygen within said fluid stream, and passing said fluid stream to the interior of said flame to thereby effect said thermal reaction of said particulate inorganic material therewithin.
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Accused Products
Abstract
A method and apparatus for thermally reacting one or more inorganic materials, the method involves the step of maintaining a flame in a combustion chamber at a predetermined reaction temperature by supplying a sufficient quantity of a hydrocarbon fuel and oxygen into the flame through a fluid stream, comminuting the inorganic material to be reacted to a particle size which can be transported by gas flow and suspending the comminuted inorganic compound in an intimate admixture with the fluid stream containing the hydrocarbon fuel and oxygen and passing the admixture to the interior of the flame to effect thermal reaction of the particulate inorganic material. The apparatus can comprise a blower, a grinding means, a furnace means, and a means for collecting the reacted material.
60 Citations
24 Claims
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1. A method of thermally reacting one or more inorganic materials at a predetermined reaction temperature comprising:
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(a) maintaining a flame in a combustion zone at said predetermined reaction temperature by passing effective combustion quantities of a fluid stream comprising a hydrocarbon fuel and oxygen into said flame; (b) comminuting said inorganic materials to a predetermined particle size sufficient to be transported by gas flow; and (c) suspending said comminuted particles of said inorganic compounds in intimate contact with said hydrocarbon fuel and said oxygen within said fluid stream, and passing said fluid stream to the interior of said flame to thereby effect said thermal reaction of said particulate inorganic material therewithin. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of manufacturing hydraulically reactive materials selected from pozzolanic and cementitious materials and mixtures thereof in a flame in a combustion zone maintained at a selected predetermined temperature by effective quantities of finely ground coal and an oxygen containing gas comprising:
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(a) intimately admixing said finely ground coal with finely ground inorganic reactant materials selected from calcareous, argillaceous, siliceous, aluminous and ferruginous materials and mixtures thereof in predetermined quantities; (b) suspending said intimate mixture within a stream of oxygen containing gas; (c) passing said stream of gas containing said intimate mixture to the interior of said flame and burning said coal to maintain said predetermined temperature and to thermally react said finely ground inorganic reactant materials to form said reactive materials in particulate form in gases formed from said combustion; and (d) discharging said gases formed from said combustion and said particulate reactive materials from said combustion zone, cooling said materials at a predetermined rate and collecting said particulate reactive material. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of manufacturing reactive cementitious materials in a flame in a combustion zone maintained at a selected predetermined temperature by effective quantities of finely ground coal and an oxygen containing gas comprising:
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(a) intimately admixing finely ground coal with finely ground inorganic calcareous and argillaceous materials in predetermined quantities sufficient to produce a reactive cementitious product; (b) suspending said intimate mixture within a stream of oxygen containing gas; (c) passing said stream of gas containing said intimate mixture to the interior of said flame and burning said coal to maintain said predetermined temperature and to thermally react said finely ground inorganic reactant materials to form said reactive cementitious materials in particulate form in gases formed from said combustion; and (d) discharging said gases formed from said combustion and said particulate cementitious reactive materials from said combustion zone, cooling said materials at a predetermined rate and collecting said particulate reactive cementitious material. - View Dependent Claims (23, 24)
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Specification