公开(公告)号：US4775627A

公开(公告)日：1988-10-04

申请号：US854509

申请日：1986-04-22

Applicant: Yosry A. Attia ,  Mohamed A. Elzeky

Inventor： Yosry A. Attia ,  Mohamed A. Elzeky

IPC: B03B1/00 ,  B03B9/00 ,  B03D1/02 ,  C10L9/00 ,  C12P1/04

CPC classification number: C12R1/01 ,  B03B1/00 ,  B03B9/005 ,  B03D1/02 ,  C10L9/00

Abstract: The invention relates to the desulfurization of high sulfur coal, and specifically to the removal of pyrite from high sulfur coal via separation processes based on relative hydrophobicity. The surfaces of the pyrite particles are modified so as to be more hydrophilic by pre-conditioning of the coal with a culture of thiophilic bacteria such as Thiobacillus ferroxidans, and the coal is then subjected to the separation process. The bacterial culture is preadapted to pyrite and to the pyrite surface modification step conditions for a period of several weeks which allows the commercial preconditioning step to be accomplished in less than one hour and typically in five to fifteen minutes.

Abstract translation: 本发明涉及高硫煤的脱硫，具体涉及通过基于相对疏水性的分离方法从高硫煤中除去黄铁矿。 黄铁矿颗粒的表面被修饰，以便通过用硫酸杆菌（Thiobacillus ferroxidans）等嗜氧性细菌的培养物对煤进行预处理而使其更亲水，然后对煤进行分离。 将细菌培养物预先置于黄铁矿和黄铁矿表面改性步骤条件下进行数周，这允许商业预处理步骤在少于1小时内，通常在5至15分钟内完成。