44results about How to "Improve smelting performance" patented technology

The invention provides red mud pellets and a preparation method thereof. The red mud pellets are prepared from the following raw materials in parts by weight: 80-120 parts of red mud, 3-10 parts of coal powder, 0.2-1 part of organic adhesive or 5-20 parts of inorganic adhesive, and 15-20 parts of water. The preparation method comprises the following steps: crushing the red mud, adding the coal powder and adhesive, gradually adding water in the stirring process, uniformly mixing, kneading in a kneading machine, extruding into pellets through pair rollers, and finally, drying the red mud pellets. The method has the advantages of simple technique and feasible operation, implements comprehensive utilization of red mud, reduces the associated cost of red mud stacking, and eliminates the influence and accident potential on the environment due to red mud stacking.

The invention relates to a method for reducing coal consumption by cyclic utilization of waste heat of a Webster furnace. According to the method, heat generated by the exothermic reaction process is collected for the endothermic reaction process by means of the reaction principle of smelting zinc oxide by a direct method in production of the Webster furnace, so that heat is recycled, the use level of coal required for the endothermic process is reduced, the fuel coal and reducing coal required in the reaction process are saved, and the power consumption can be reduced by 30%. From the oxidizing chamber of the Webster furnace, cooling and settling processes of zinc oxide smoke are performed, and heat exchanged in the processes can be used for drying agglomerates. The agglomerates are prepared from mixtures of zinc-containing materials, coal and the like which are pressed to pellets through a ball press machine. Before the agglomerates enter into the hearth to be smelted, the agglomerates can be aired till the moisture is lower than 8%. By using the method, the drying time of the agglomerates can be accelerated, and the production efficiency is improved by over 10%.

The invention relates to the field of metallurgy, and particularly discloses a smelting method. A smelting furnace which can carry out smelting quickly is used for conducting smelting. The smelting furnace comprises a rack, a cutting mechanism and a smelting mechanism. The cutting mechanism comprises a cutter, a cutting motor and an outer cylinder, wherein the cutting motor can drive the cutter torotate. The smelting mechanism comprises a smelting furnace body, a stepping motor and a burning cylinder, wherein the burning cylinder is located on the periphery of the smelting furnace body, and the stepping motor can drive the smelting furnace body to rotate. The smelting furnace body is fixedly provided with a collection tank, the smelting furnace body is internally and fixedly provided witha slag blocking ring, the middle portion of the slag blocking ring protrudes towards the center of the smelting furnace body, and the lower portion of the smelting furnace body is provided with a slag outlet. The smelting method comprises the first step of material mixing, the second step of pre-heating, the third step of smelting, the fourth step of discharging and the fifth step of cleaning. Bymeans of the scheme, metal in ores can be rapidly reduced.

The invention discloses a preparation method of modified titanium concentrates, and belongs to the technical field of titanium slag smelting. The preparation method of the modified titanium concentrates comprises the following steps: (a) oxidation: the oxidation rate of titanium concentrates is controlled to be not lower than 90%; (b) reduction: the oxidation rate of the reduced titanium concentrates is controlled within 30-50%; (c) classification: thick-particle titanium concentrates with particle sizes of +200 meshes not less than 90% and fine-particle titanium concentrates with particle sizes of -200 meshes not less than 90% are obtained; and the thick-particle titanium concentrates are modified titanium concentrates A; and (d) granulation: the fine-particle titanium concentrates are granulated; the particle sizes of pellets are controlled within 10-20 mm; modified titanium concentrates B are obtained; and the modified titanium concentrates are ones of the modified titanium concentrates A and the modified titanium concentrates B. The modified titanium concentrates are used as titanium slag smelting raw materials, so that the smelting electric consumption and the smelting time can be effectively reduced, meanwhile, the granulation conditions are improved, reasonable utilization of the fine-particle titanium concentrates is realized, the energy saving and cost reducing effectsare obvious, and excellent home and abroad popularization and application prospect is achieved.

The invention discloses a crushing smelter with a better smelting effect. The crushing smelter comprises a smelter body, discharging holes are formed in the obverse side of the smelter body, and burning cavities are formed in the two sides of the smelter body. Burning devices are connected to the outer sides of the burning cavities, a discharging cavity is connected to the top of the smelter body, and a crushing cavity is connected to the top of the discharging cavity. A crushing idler wheel is arranged in an inner cavity body of the crushing cavity and connected with a rotary motor arranged outside the crushing cavity through a wheel shaft, a feeding cavity is connected to the top of the crushing cavity, and a left feeding pipe and a right feeding pipe which are connected with the top of the crushing cavity are installed on an inner cavity of the feeding cavity in a staggered mode. The crushing smelter with the better smelting effect is provided with the crushing cavity and the crushing idler wheel on the whole so that input large metal waste materials can be crushed and pressed, and the large metal waste materials are changed into small metal waste materials, so that smelting operation is convenient to conduct, and the metal waste materials are quickly and conveniently smelted.