Composite proppant, composite filtration media and methods for making and using same

Composite proppant, composite filtration media and methods for making and using same

  • CN 1,274,376 B
  • Filed: 07/22/1999
  • Issued: 08/10/2011
  • Est. Priority Date: 07/22/1998
  • Status: Active Grant
First Claim
Patent Images

1. composite particles comprises:

  • Basic shaped particles uniformly, this shaped particles comprises;

    First part'"'"'s binding agent and the filler particles that in whole described first part binding agent, distributes and the optional additive that exists, wherein said first part binding agent is partly solidified at least;

    The particle diameter of described filler particles is from 0.5 micron to 60 microns, the sphericity at least 0.7 of described composite particles;

    WithBe used to be coated with the second section binding agent and the optional additive that exists of the optional existence of shaped particles;

    The 60-85 volume % of described composite particles is described filler particles,Wherein, described first part and second section binding agent are selected from following material and are formed by at least a independently of one another;

    mineral binder bond, Resins, epoxy, novolac resin and resol perhaps comprise independently of one another and are selected from following a kind of material;

    phenolic aldehyde/furane resin, furane resin and their mixture.

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