Patent pending announcement., page-3

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2014172954
http://brevets-patents.ic.gc.ca/opic-cipo/cpd/eng/patent/2878623/summary.html


Provided is a petroleum fracturing proppant prepared from flyash and waste ceramics, the petroleum fracturing proppant being prepared from the following components: 40 wt.%-90 wt.% of main material, the main material being flyash and waste ceramics; 1 wt.%-40 wt.% of auxiliary material, the auxiliary material being potassium feldspar powder and manganese ore powder; and the sum of the main material and the auxiliary material is 100%. The present invention employs low-cost flyash and waste ceramics as raw material, and the petroleum fracturing proppant prepared under a low temperature has low apparent density and strong crushing resistance, and is also low cost and reduces energy consumption.



WHAT IS CLAIMED IS
1. A petroleum fracturing proppant produced from flyash and waste ceramics,
characterized in that it is prepared from the following components:
40%-90% by weight of a main material that is composed of flyash and waste
ceramics;
1%-40% by weight of an auxiliary material that is composed of potash feldspar
powder
and manganese ore powder;
wherein sum of the main material and the auxiliary material is 100%.
2. The petroleum fracturing proppant according to claim 1, characterized in
that the
waste ceramics are low-aluminum waste ceramics.
3. The petroleum fracturing proppant according to claim 1, characterized in
that a mass
ratio of the flyash to the waste ceramics is (4-6)2-3).
4. The petroleum fracturing proppant according to claim 1, characterized in
that a mass
ratio of the potash feldspar powder to the manganese ore powder is (2-5):1.
5. The petroleum fracturing proppant according to claim 1, characterized in
that MnO2
in the manganese ore powder accounts for 0-5 % by weight of the petroleum
fracturing
proppant produced from flyash and waste ceramics.
6. A method for preparing a petroleum fracturing proppant produced from flyash
and
waste ceramics, comprising the following steps:
A) mixing flyash, waster ceramics, potash feldspar powder and manganese ore
powder
to perform homogenization and refining treatment, and then sieving it after
granulation so as
to obtain a mixture; and
B) sintering the mixture to obtain the petroleum fracturing proppant produced
from
flyash and waste ceramics.
7. The preparation method according to claim 6, characterized in that the
waste
ceramics are low-aluminum waste ceramics.
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8. The preparation method according to claim 6, characterized in that the
mixture has a
particle size ranging from 3350 to 106 µm.
9. The preparation method according to claim 6, characterized in that the step
A) is
particularly: mixing the flyash, the waster ceramics, the potash feldspar
powder and the
manganese ore powder, placing into a forced mixer to perform homogenization
and refining
treatment, and then sieving it after granulation so as to obtain a mixture.
10. The preparation method according to claim 6, characterized in that the
sintering is
performed for 4-8 h.
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Admin Status

	Title	Date
1	(86) PCT Filing Date	2013-05-29
2	(87) PCT Publication Date	2014-10-30
3	(85) National Entry	2015-01-08
4	Examination Requested	2015-01-08