5results about How to "Fully calcined" patented technology

This utility model relates to the field of cement grinding aid production technology, and proposes an optimized device for the calcination production process of cement grinding aid, comprising: a base and an insulation box; a furnace body is fixedly installed inside the insulation box, a waste heat pipe is fixedly installed at one end of the furnace body, and an insulation layer is fixedly installed inside the furnace body; a mixing pipe is fixedly installed inside the furnace body, a gas pipe is fixedly installed at one end of the mixing pipe, and an oxygen pipe is fixedly installed at the other end of the mixing pipe; a mixing chamber is opened inside the insulation layer, and an air outlet is opened inside the insulation layer. Through the waste heat pipe and the insulation box, the waste heat inside the waste heat pipe can heat the surface of the furnace body, thereby preventing heat loss from the furnace body surface. The insulation box, made of ceramic fiber, can insulate the furnace body and reduce heat loss. By connecting the gas pipe and oxygen pipe to an external gas storage structure, the stability of the calcination flame can be increased.

The invention discloses a waste mercury catalyst recovery and treatment device and method, and relates to the technical field of waste mercury catalyst recovery; the device comprises a calcining furnace, a recovery furnace is connected to the top of the calcining furnace, a dry distillation tube is arranged inside the recovery furnace; a cleaning mechanism is arranged on the top cover, the cleaning mechanism comprises a counterweight push seat hoisted on the top cover, and the inner wall of the dry distillation tube is cleaned by the counterweight push seat; a scraping and unloading mechanism is arranged at the bottom end of the dry distillation tube, the scraping and unloading mechanism comprises a matching conical seat slidably matched at the bottom end of the dry distillation tube, and a scraping frame rotatably mounted on the inner side of the bottom end of the dry distillation tube, and a pressing mechanism is arranged inside the matching conical seat; a calcining tube is slidably arranged inside the calcining furnace, and materials fall from the dry distillation tube into the calcining tube; the invention can perform secondary calcination on the waste mercury catalyst, and the index is far better than the original recovered mercury catalyst level, and the process is compact, there is no cumbersome transfer and transportation process, and it is convenient for unloading and maintenance.

The present invention belongs to the technical field of static cement kiln calcining equipment, and specifically relates to a static kiln cement clinker calcining system, which includes a feed distribution and adjustment system electrically connected to a control system, a multi-stage cyclone preheating system, a secondary calcining furnace, a fluidized bed calcining furnace and a cooling system, and the room temperature raw material is discharged in the form of clinker after passing through the feed distribution and adjustment system, the multi-stage cyclone preheating system, the secondary calcining furnace, the fluidized bed calcining furnace and the cooling system in sequence, and the room temperature gas is discharged in the form of waste gas after passing through the cooling system, the fluidized bed calcining furnace, the secondary calcining furnace and the multi-stage cyclone preheating system in sequence. The present invention has the characteristics of flexibility in the calcination of cement clinker in small batches of multiple specifications, and the cooling air of the fluidized bed calcining furnace is not discharged externally. All the waste heat is recycled; due to the low calcination rate of clinker, the energy consumption is reduced, which reduces the energy consumption to a certain extent, thereby reducing environmental pollution and saving energy and protecting the environment.

The invention discloses a method for calcining a concrete expansive agent by adopting a novel dry-process kiln. The method comprises the following steps: respectively crushing limestone, bauxite and anhydrite, and warehousing; the preparation method comprises the following steps: weighing 60-90wt% of crushed limestone, 1-6wt% of bauxite and 8-35wt% of anhydrite, mixing and grinding to obtain a powdery material, namely a raw material; pre-decomposing the mixed raw material through a preheater, calcining in a rotary kiln, cooling to obtain an expanding agent clinker, and grinding the clinker to obtain the concrete expanding agent. The advantages of a novel dry method kiln are fully utilized, materials are heated more uniformly and calcined more sufficiently, the fired expanding agent clinker is uniform in size, the content and activity of free calcium oxide are stable, the structure is more compact, the activity of free calcium oxide and anhydrous calcium sulphoaluminate is more stable, and the comprehensive effect on the mechanical property and limited expansion rate of cement mortar is better.

The utility model discloses a calcining furnace for producing calcined petroleum coke, which comprises a working table, two supporting columns are fixedly connected to the lower end of the working table, a furnace body is fixedly connected to the upper end of the working table, an exhaust pipe and a combustion pipe are respectively arranged on the side wall of the furnace body in a butt joint mode, a feeding port is arranged on the side wall of the other side of the furnace body in a penetrating mode, and a discharging port is arranged on the other side of the furnace body. A feeding plate is fixedly connected to the feeding port, a smashing device is fixedly connected to the upper end of the furnace body, and a sealing device is arranged below the workbench. The calcining furnace has the advantages that an operator can stir and crush materials conveniently, material blockage is reduced, and the calcining speed is increased.