Ceramic proppant and method for producing same
First Claim
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1. A method for producing a ceramic proppant, comprising steps of:
- a) pre-firing source materials, said source materials comprising magnesium-containing material, in a furnace having an atmosphere with an oxygen content of 0.001 to 5 weight percent, said atmosphere being maintained by introducing a carbon-containing additive,(b) preparation of a charge material, said preparation of the charge material including grinding said pre-fired source materials with auxiliary materials;
(c) granulating the charge material to produce proppant precursor granules; and
(d) firing the proppant precursor granules to produce proppant granules.
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Abstract
The invention relates to a method for producing a ceramic proppant, including a step for preparing an original charge material, involving the grinding of source materials, particularly magnesium-containing materials, and auxiliary materials, thus producing a charge material, granulating the charge material so as to produce granules of a proppant precursor, and firing the granules of proppant precursor, thus producing proppant granules, wherein the method includes a step for pre-firing the magnesium-containing material in a reducing atmosphere. The invention also relates to a ceramic proppant produced via the indicated method.
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Citations
20 Claims
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1. A method for producing a ceramic proppant, comprising steps of:
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a) pre-firing source materials, said source materials comprising magnesium-containing material, in a furnace having an atmosphere with an oxygen content of 0.001 to 5 weight percent, said atmosphere being maintained by introducing a carbon-containing additive, (b) preparation of a charge material, said preparation of the charge material including grinding said pre-fired source materials with auxiliary materials; (c) granulating the charge material to produce proppant precursor granules; and (d) firing the proppant precursor granules to produce proppant granules. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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