Waste tire recycling method

• Main Authors: CHEN RONGHUAN, WANG RUYI, SHI LEI, ZHANG YONGJIE, GU DEREN
• Format: Patent
• Language: Chinese; English
• Published: 24.11.2020
• Subjects: APPARATUS THEREFOR; CHEMISTRY; DISPOSAL OF SOLID WASTE; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; MAKING GRANULES OR PREFORMS; METALLURGY; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY ORREFINING OF METALS; RECLAMATION OF CONTAMINED SOIL SOIL; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention discloses a waste tire recycling method. The method comprises the following steps that 1, a waste tire is cut and broken and then is smashed after steel wires and fibers are sorted out,and rubber powder with the particle size being 20-200 mesh is obtained; 2, the rubber powder is subjected to acid leaching through a sulfuric acid solution to obtain an acid leaching solution and solid phase matter; and 3, the acid leaching solution is electrolyzed to obtain metal zinc, or the acid leaching solution is subjected to evaporative crystallization to obtain zinc sulfate. According to the waste tire recycling method of the invention, full utilization of valuable resources in the waste tire is achieved. 本发明公开了一种废轮胎的回收利用方法，该方法包括以下步骤：步骤一，将废轮胎切割、破碎，分选出钢丝和纤维后进行粉碎，得到颗粒尺寸为20～200目的胶粉；步骤二，采用硫酸溶液将所述胶粉进行酸浸，得到酸浸液和固相物；步骤三，将所述酸浸液进行电解，得到金属锌；或者将所述酸浸液进行蒸发结晶，得到硫酸锌。本发明的废轮胎的回收利用方法，实现了废轮胎中有价资源的全量利用。