Production process for sintering silicon carbide ceramics with photovoltaic silicon linear cutting wastes

• Main Author: Ren Haitao
• Format: Patent
• Language: Chinese; English
• Published: 24.08.2016
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; DISPOSAL OF SOLID WASTE; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LIME, MAGNESIA; METALLURGY; PERFORMING OPERATIONS; RECLAMATION OF CONTAMINED SOIL SOIL; REFRACTORIES; SLAG; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; TREATMENT OF NATURAL STONE

The invention discloses a production process for sintering silicon carbide ceramics with photovoltaic silicon linear cutting wastes. The production process comprises the following four steps: raw material preparation, wet ball milling, biscuit preparation and high temperature sintering. The production process has the advantages and beneficial effects that the recycling added value of photovoltaic silicon linear cutting fluid can be greatly increased by using the photovoltaic silicon cutting wastes as the main raw materials and adding carbon black, colloidal graphite and silicon carbide powder to carry out preparation reaction to sinter the silicon carbide ceramics; and the silicon carbide ceramics are compact and have low water absorption and apparent porosity. 本发明公开了种光伏硅线切割废料烧结碳化硅陶瓷的生产工艺，包括配置原料、湿法球磨、制备素坯和高温烧结四步骤。以光伏硅切割废料为主要原料，外加炭黑和胶体石墨和碳化硅粉制备反应烧结碳化硅陶瓷，可大大提高光伏硅线切割液的回收利用附加值，所述碳化硅陶瓷致密，吸水率和显气孔率低。