33results about How to "High hot and cold intensity" patented technology

The invention relates to a method for preparing a briquette binder. According to the method, pulverized coal and bentonite are taken as master batches and are matched with water as a solvent and a catalytic sodium agent so as to react at a high temperature and a high pressure for preparation of the briquette binder. The method has the advantages of obviously improving the coking property of coal briquette, being simple in technology and simple in operation and having obvious economic and social benefits. Raw materials are wide in source and have low cost.

The invention discloses a coke quenching method and material of solid powder, which comprises the following steps: pouring red coke in the coke quenching car powder to blend evenly; dissipating heat; putting coke and coke quenching powder into sieving equipment when the coke temperature is below 200 Deg C; finishing coke quenching.

The invention discloses technology of sodium-based serial composite modified briquette special for gas stoves. The technology is established through optimization and screening based on multiple-batch and long-period industrial tests. Preparation of a two-component binder is the core technology of the invention; the binder comprises a sodium-based organic binder component (NR1) and a sodium-based inorganic binder component (NR2) which are respectively prepared through modification of organic matter and inorganic matter which are widely distributed, rich in reserve, and low in price. Before powder coal shaping, the (NR1) and (NR2) components are mixed with the powder coal according to a certain proportion based on the coal quality conditions; after procedures of kneading, shaping, and consolidation, a gasification briquette product is processed, which has cold-state compressive strength of not less than 600 N/ball, thermal-state compressive strength of not less than 400 N/ball, thermal stability of more than 99%, an ash fusion point ST of more than 1400 DEG C, a bonding index G tending to be zero, and chemical activity of more than 90%. Practice confirms that the special briquette produced by the sodium-based two-component composite binder is far better than Datong lump coal commonly used by people with respect to gasification performance. The popularization and application of the technology of the invention can not only relieve the situation of few product and high price for commercial lump coal, but also increase the value of powder coal processing, greatly reduce fuel cost for briquette users, and the technology of the invention is innovative technology with long development prospects.

The invention discloses a low rank pulverized coal pyrolysis oil extraction process. The process includes: taking 100 parts of low rank pulverized coal, 10-15 parts of a 0.5%-2% organic binder, and 8-15 parts of strong adhesive pulverized coal as the raw materials, and mixing the material evenly, and extruding the mixture into block coal on briquetting equipment; drying the block coal, then putting it into a pyrolysis furnace, conducting air isolation heating at 550-650DEG C, recovering the volatile and performing condensation and cooling so as to obtain gas phase coal gas, a tar, water and tar residue mixture, and solid semicoke, separating the tar, water and tar residue to obtain tar, tar residue and water; and adding the each time separated tar residue into the raw material of follow-up oil extraction process to be used as an auxiliary adhesive for briquetting of low rank pulverized coal. Therefore, the a lot of powder of low rank coal can be utilized efficiently, and the tar yield is significantly increased.

The invention discloses an activated coal adhesive and preparing method and application, which comprises the following parts: 20-22% alkaline disposing wood slag, 38-40% sodium phytate, 26-28% swelling soil, 9-10% lime, 1.5-2.5% zeolite and 1.5-2.5% industrial salt.

The invention belongs to the technical field of an adhesive used for metallurgy, in particular to an adhesive used for preparing cold bond pellets from Ramsbottom carbon powder, a preparation method and a use method thereof. The adhesive is prepared from the following ingredient in percentage by weight: 3 to 5 percent of aluminium oxide, 5 to 10 percent of sodium silicate, 3 to 10 percent of polyving akohol, 0.5 to 1 percent of crylic acid, 0.5 to 1 percent of calcium oxide and the balance of water, and the weight sum of the ingredients is 100 percent. The method comprises the following steps: firstly, grafting modified polyving akohol through crylic acid; then, adding other ingredients; and finally, preparing the adhesive through high-speed mixing. During the preparation of the pellets, the mixing proportion with the Ramsbottom carbon is controlled at a value about 1/20. The invention is suitable for small blast furnace iron manufacture, and can be used for replacing parts of coke in industries such as metallurgical furnace charge, chemical engineering coal gas raw materials, calcium carbide production raw materials and the like.

The invention discloses a 10mm-below granular oil shale cold-pressing sphere and a method for oil refining by adopting the same. The oil shale cold-pressing sphere is prepared by adding adhesives with weight percentage of 8-15 percent into 10mm-below granular oil shale, wherein the adhesives comprise the following components in percentage by weight: 10-30 thousandth of humic acid calcium, 20-40 thousandth of kaolin, 0.5-1 thousandth of magnesium phosphate, and the balance water. The method comprises the following steps of: feeding the oil shale cold-pressing sphere into a gas retort, cushioning and falling through two layers of baffles, increasing steps of heat supplying carried out by a central heat supply device in the gas retort and the like so as to carry out dry distillation to obtain an oil gas mixture, and carrying out oil refining through an oil recovery system and the like. The oil shale cold-pressing sphere has good resistance to high temperature and high mechanical strength, and is not easy to crush; the production period of the gas retort is effectively prolonged, and the working efficiency is improved; and the cold-pressing sphere is adopted for oil refining, so that the co-combustion amount is high, the heat stability is good, the hot and cold strength is high, the dry distillation effect is good, the oil extraction rate is higher, the pollutant emission is less, the space is saved, the secondary pollution is avoided, and the cost is low.

The invention relates to a metallurgical pellet binding agent which can reach the strength required by metallurgy, and a process which can improve the qualification rate of the metallurgical pellet products, simplify the technical process and reduce the cost and presses the pellet products by using the binding agent. The metallurgical pellet binding agent comprises the following raw materials: 1.435 kilos of blue vitriol, 0.5 kilo of red vitriol, 221 kilos of sodium silicate, 110.5 kilos of water, which are heated and mixed evenly. 425# Portland cement accounting for 3-8 percent of the metallurgical raw materials is added, and the metallurgical pellet binding agent is obtained. The metallurgical raw materials and the 425# Portland cement are mixed in a stirrer in terms of fixed quantity according to a proportion of 1:0.03-0.08. The rest raw materials of the binding agent, which account for 3-8 percent of the added 425# Portland cement, are sprayed in the mixture material. Pellets are obtained by means of pressing in a ball press. The pellets are maintained and dried and then can be placed into a furnace for use. The metallurgical pellet binding agent has the advantages of low binding cost and high pellet strength, is economical and practical and can bind different metallurgical scraps together, particularly iron concentrate powder and pulverized coal, so as to press and shape the metallurgical pellets satisfying the metallurgical requirement.

The invention relates to a composite adhesive containing coal iron powder pellets, which comprises 30-50% of modified ammonium humate, 5-15% of starch, 40-60% of flux and other components. The adhesive is added in the form of dry powder, the adding way is simple and easy to control, the adding amount is 4-6%, and the adhesive has broad resources of raw materials, low cost, no introduction of alkali metal elements which are harmful to the iron-making technology, high cold and hot strength of the molded pellets and high thermal stability of higher than 90%, and is conductive to reducing the melting point for iron-making by smelting reduction. The composite adhesive can meet the needs of large-scale production and easy popularization.

The invention relates to an industrial flue gas solid waste recycling drying-free curing material and application, and effectively solves the technical problems that the existing pollution treatment method affects the air permeability of a sintered material layer and the strength of sintered ore and cannot be recycled and reused for application, and the curing material is prepared from the following raw materials in percentage by weight: 40-50% of a forming agent, 5-10% of a modifier and 40-50% of a catalyst. Wherein the forming agent consists of polysaccharide sludge, boric sludge and citric acid; the modifying agent is prepared from N-hydroxymethyl acrylamide and dicyclopentadienyl iron; the catalyst is composed of sodium aluminate, calcium aluminate and active magnesium oxide. The material is used for industrial flue gas solid waste solidification treatment, industrial flue gas purification solid waste can be directly solidified into block mass particles through a forming device, the block mass particles can be used as auxiliary materials or raw materials for smelting after being naturally solidified for 8-18 h, and therefore industrial flue gas pollution treatment and solid waste recycling application are achieved.

The invention relates to a briquette binder and a briquette manufacturing method. Domestic animal blood or blood powder is compounded with organic wastewater containing natural polymers, using amount of the domestic animal blood is 7% to 15% of weight of coal, using amount of the blood powder is 10% of the weight of the coal, and using amount of the organic wastewater is 4% to 6% of the weight of the coal. The briquette binder and the briquette manufacturing method are characterized in that the domestic animal blood is performed anti-coagulation and antiseptic treatment, namely an anticoagulant occupying 0.48% to 2% of weight of the blood and an antiseptic occupying 0.4% to 0.6% of the weight of the blood are added.