• 专利标题:   Production of artificial volcanic stone blocks using Bayer red mud, involves mixing pulp, Bayer red mud and surfactant, adding coal powder to obtain slurry, and mixing slurry, clay, leavening agent, foaming agent and graphene oxide.
  • 专利号:   CN106146006-A
  • 发明人:   GUO H
  • 专利权人:   HEFEI GUANGJUCAI BUILDING DECORATION ENG
  • 国际专利分类:   C04B033/13, C04B033/132, C04B038/02
  • 专利详细信息:   CN106146006-A 23 Nov 2016 C04B-038/02 201704 Pages: 4 Chinese
  • 申请详细信息:   CN106146006-A CN10506737 29 Jun 2016
  • 优先权号:   CN10506737

▎ 摘  要

NOVELTY - The production of stone blocks involves milling pulp, adding Bayer red mud and surfactant, mixing, adding coal powder, feeding into ball mill, grinding, mixing 60-80 wt.% slurry with 20-40 wt.% clay, 1-5 wt.% leavening agent, 1-2 wt.% foaming agent and 4-6 wt.% graphene oxide, extruding the mixed material into raw blank, dry firing, naturally air-drying so that the moisture content is less than 8%, placing blank into tunnel kiln for firing, sintering at 1000-1400 degrees C for 3-8 hours, and cooling to below 80 degrees C. USE - Production of artificial volcanic stone blocks using Bayer red mud (claimed). ADVANTAGE - The method enables production of artificial volcanic stone blocks with reduced transportation cost, improved comprehensive utilization and development of Bayer red mud tailings, and improved properties. DETAILED DESCRIPTION - The production of stone blocks involves milling pulp, adding Bayer red mud and surfactant, mixing, adding coal powder, feeding into ball mill, grinding to obtain slurry of size 150-200 mesh, where surfactant is stearic acid or benzenesulfonic acid, added amount of surfactant is 0.1-0.5 wt.% of Bayer red mud, added amount of coal powder is 10 wt.% of Bayer red mud, mixing 60-80 wt.% slurry with 20-40 wt.% clay, 1-5 wt.% leavening agent, 1-2 wt.% foaming agent and 4-6 wt.% graphene oxide, extruding the mixed material into raw blank, dry firing, naturally air-drying so that the moisture content is less than 8%, placing blank into tunnel kiln for firing, sintering at 1000-1400 degrees C for 3-8 hours, and cooling to below 80 degrees C.