38results about How to "Save coke" patented technology

The invention discloses a production method of inorganic fiber by using red mud and fly ash, mainly comprising the following steps: using the red mud and the fly ash as the raw materials, mixing the raw materials with the one or more of quick lime and industrial solid slag at certain ratio, adding the water, and drying naturally or stream-curing to form the block materials, mixing the raw materials with the coke at certain ratio in a cupola furnace, performing the high temperature melting to obtain inorganic fiber melt, and enabling the melt to flow into a four-roller centrifuge, throwing the melt at extremely high speed through the high-speed rotation of the four-roller centrifuge to form the inorganic fiber with the diameter of 3 to 7 mu m and the length of 7 to 20 cm, and discharging the iron slag from an iron notch at the side bottom of the cupola furnace to recover the iron. The method of the invention transforms the wastes and the harms into treasures, and reduces environmental pollution of the red mud, the fly ash and the industrial solid slag with high calcium content. The method of the invention makes the full use of the resources such as Al2O3, SiO2, Na2O, CaO and Fe2O3 in the red mud, the fly ash and the industrial solid slag with high calcium content, recycles the waste materials, saves the coke and has low production cost.

The invention relates to an ironmaking method, which comprises the following steps of: mixing alkaline solvent and gas, and blowing the mixture to a hearth of furnace cavity of a blast furnace or a gas producing furnace from a tuyere of the blast furnace or the gas producing furnace. In the ironmaking method, the alkaline solvent is blown from the tuyere, and heat quality consumed by the decomposition of the alkaline solvent is compensated by utilizing the redundant capacity of the theoretic combustion temperature in front of the tuyere to fulfill the aim of saving coke; meanwhile, consumed carbon also can be saved, so the economic benefit is obvious. In addition, by the ironmaking method, a heat value of furnace top gas can be improved, and the production efficiency of smelting is improved.

The invention provides a method for controlling the radial ore to coke ratio in a blast furnace burden distribution process. The method comprises the following steps that: a blast furnace burden parameter and a blast furnace body equipment parameter are collected; the function relationship between each control parameter in the blast furnace burden distribution process and the current formed burden distribution burden level is built; the function relationship between the current formed burden distribution burden level and the burden distribution burden level after the burden level reduction is built; a blast furnace burden distribution process control model is built and is used for describing the relationship between a blast furnace burden distribution radial ore to coke ratio curve and each control parameter; the optimum control parameter is determined by using the blast furnace burden distribution process control model, and the current blast furnace burden distribution process is controlled in real time; and when the error of the radial ore to coke ratio curve in the real-time control process of the current blast furnace burden distribution process is greater than an error allowable value, the blast furnace burden distribution process control model is rebuilt, and otherwise, the current blast furnace burden distribution process is completed according to the current ore to coke ratio curve. The method provided by the invention has the advantages that the real-time burden level shape can be provided, so that operators can be effectively guided for improving a charging system, modifying a burden distribution matrix and regulating the furnace burden distribution.

The invention discloses a one-box four-type casting process of a brake disk. The process comprises the following technological steps: a sand processing procedure adopts a chassis rotary type rotor sand mixing machine, sand mixing is carried out according to a sand mixture ratio, the sand mixing efficiency is 120 tons / hour, and the sand mixing time is 3-5 minutes; a moulding procedure adopts a static-pressure production line with double-host wiring for moulding and a special mould of a one-box four-type brake disk, the production efficiency is 180 boxes / hour, and the moulding pressure intensity is 8-10MPa; a smelting procedure adopts a cupola and an electric furnace for double smelting, the pouring temperature is 1450-1490 DEG C, and 0.3% of degeneracy-resisting silicon-barium nucleating agent is added before the furnace; a pouring procedure adopts an automatic pouring truck for pouring, and the pouring time is 8-15 seconds; and a desanding and shot blasting procedure adopts a vibration type desanding machine for desanding, and then a stepping type suspended connection shot cleaning chamber is used for cleaning the brake disk. The production process has the characteristics of high rate of finished products, high technological casting yield, high mechanization degree, short production period, high production efficiency, small energy consumption and the like.

The invention discloses a high pure andalusite brick for an air heating furnace with high blast temperature and long service life, and a preparation method thereof. The high pure andalusite brick is prepared by the following steps: andalusite, sillimanite sand, activated alumina powder and kaolin are taken as raw materials, andalusite powder, the activated alumina powder and kaolin powder which have the raw material particle size of between 0.088 and 0 mm are premixed into powder first, then the remaining particle materials, sulphite liquor and the prepared powder are mixed evenly to produce pug, the produced pug is pressed into a green brick, and the green brick is transferred into a high-temperature tunnel kiln for calcination to obtain a product. As a refractory material of a large-scale air heating furnace, the product has low creep rate and good thermal shock stability during use, and can apparently improve the blast temperature and the service life of the air heating furnace, thereby saving a large amount of maintenance cost and energy-saving cost for iron and steel users, and obtaining remarkable social and economical benefits.

The invention relates to a device for recovering zinc by using zinc-contained dust of steel and iron works and a recovery method thereof. The zinc-contained dust of the steel and iron works is sprayed into an enriching furnace, or is added in the enriching furnace after being caked; zinc in the dust is reduced to zinc steam in the enriching furnace; generated zinc-contained smoke is leaded into a cloth bag dust collector after rough dust removal and afterheat recovery of a heat exchanger; zinc is oxidized as zinc oxide, and is captured on the cloth bag dust collector to obtain high-zinc dust; the high-zinc dust is sprayed into a recovery furnace; zinc in the dust is reduced as zinc steam in the recovery furnace; high-zinc smoke generated in the recovery furnace is captured by lead liquid in a condensation separation device; and liquid-stage rough zinc is obtained after separating liquid-state zinc from liquid-state lead. The high-zinc smoke generated in the recovery furnace also can be cooled by water in a spray washing tower, oxidized, captured and precipitated as zinc oxide mud after rough dust removal and afterheat recovery of an afterheat boiler and the heat exchanger; and the zinc oxide mud is centrifugally dried to obtain zinc oxide.

The invention relates to a heavy hydrocarbon oil catalytic cracking addition agent and a preparation method which belongs to the field of catalytic cracking catalyst of hydrocarbon oil, in particular to an optimized addition agent of a hydrocarbon oil catalytic cracking catalyst. The invention is characterized by comprising the following components (weight percent): 10 to 65 percent of Al2O3, 2 to 13 percent of P (counted in P element), 1 to 15 percent of SiO2 as well as 10 to 65 percent of clay. The addition agent of the invention can be compounded and used with various catalytic cracking catalysts to improve the effective conversion rate of the heavy hydrocarbon oil and the selectivity of a cracking reaction is good, thereby improving the yield of gasoline and liquid gas, improving the gasoline octane number, reducing the olefin content in the gasoline, endowing the catalyst with the performance for resisting the pollution of heavy metals, providing and maintaining the continuous high activity and aquathermal stability of the catalyst, enhancing the wear-resistant intensity performance of the catalyst, and prolonging the service life of the catalyst. The addition agent is an ideal heavy hydrocarbon oil catalytic cracking addition agent.

The invention provides a production method of a mesoporous SAPO-34 suitable for commercial applications. A hydrothermal synthesis method commonly used for industries is adopted, wherein a cheap organic pore-forming medium for commercial supply is introduced, the cheap organic pore-forming medium is not only capable of forming pores, but also capable of accelerating a crystallization process. Diethanolamine and N-substituted derivatives thereof form a large-pore structure once in a crystallization process, and the pore diameter of the large-pore structure can be regulated according to the sizeof a substituted organic group of the large-pore structure; and the formation time of a crystal nucleus is shortened by the N-substituted derivatives and a templating agent tetraethylammonium hydroxide (TEAOH), so that the crystallization process is accelerated. Crystallization can be finished within 3h, diethanolamine and the N-substituted derivatives thereof are removed by washing, and the generated SAPO-34 is high in crystallinity and high in olefin selectivity.

The invention discloses a method for regenerating a rock wool waste mixture. The method is characterized by comprising the following steps: I, crushing rock wool waste; II, putting raw materials into a three-chamber dosing machine and mixing with an additive A and an additive B; III, adding water and stirring; IV, conveying the evenly stirred materials to a regenerated rock wool raw material forming machine through a feeding conveyer; V, forming; VI, conserving; and VII, storing. The regenerated rock wool raw material produced by using the method can be used as a main raw material for producing rock wool; firstly, iron slag in the produced generated rock wool raw material can be sorted out due to a larger particle size, and thus long-time production can be carried out without frequent stop and cleaning of slag during the production process of rock wool; and secondarily, the produced regenerated rock wool raw material is a composite material and has low melting temperature, so that coke can be saved by 30%, the wool production efficiency can be increased by 25%, and the problem of shortage of the rock wool raw material can be solved.

Relating to the technical field of chute automation control of a blast furnace distributing device, the invention especially relates to an automatic control device for rotation of a blast furnace chute. The device is characterized by comprising an input unit, a frequency conversion driving unit, an execution unit and a PLC (programmable logic controller) control unit. The input unit is connected to the frequency conversion driving unit and the execution unit in order, and the PLC control unit is in connection with the frequency conversion driving unit. The input unit consists of a rapid fuse, a contactor and a reactor 1 which are connected to a three-phase power supply in order. Compared with the prior art, the invention, by combining a PID (proportion integration differentiation) closed loop vector control technology and a PLC programming control technology, converts a speed instruction to an analog signal of 4-20mA so as to control the rotation speed of the chute, thus the system can have great torque and rapidity, and also can reach an ideal degree of accuracy. Therefore, the utilization coefficient of the blast furnace is raised, and the discharge of exhaust gases and flue dust can be reduced.

The invention discloses a pellet binder prepared from residues in the direct coal liquefaction process and a preparation method thereof. The preparation method comprises the following steps of: blending the residues in the direct coal liquefaction process, bentonite, a dispersant, sodium carbonate and water in a certain proportion, and performing wet ball-milling pulping to obtain a stable liquidpellet binder; and drying the liquid pellet binder, and crushing to obtain a powdery pellet binder. The binder has low cost, the content of silicon oxide introduced into a product is low, more ferricoxide and organic matters are introduced, the grade of an iron ore raw material is improved, coke consumption is lowered, the preparation method is an effective way to fully use the residues in the direct coal liquefaction process, waste materials are changed into valuable materials, and energy conservation, emission reduction and good economic and social benefits are realized.

The invention relates to a method for padding a gap of a lining plate of a cone crusher, which is suitable for effectively padding and assembling the gap between a dynamic cone shell and a static cone shell of the prior cone crusher and the lining plate and aims to reduce padding cost and enhance safety. The method comprises the following steps: cleaning oil contaminations between the dynamic cone shell and a dynamic cone lining plate of the cone crusher and the static cone shell and a static cone ling plate of the cone crusher; then selecting sands with the diameters of 1-5 millimetres, and cleaning mud inside the sands by clean water; then heating the sands to the normal temperature of 10 DEG C-20 DEG C; mixing the processed sands with cement according to a weight ratio of 1.5 to 1, adding a right amount of water to the mixture to prepare cement mortar with fluidity, and padding the cement mortar with the fluidity to gaps between the dynamic cone shell and the dynamic cone lining plate of the cone crusher and between the static cone shell and the static cone ling plate of the cone crusher.

The invention discloses a method for producing metallized pellets by direct reduction of powdered iron by carbon cycle oxygenation. The method mainly comprises the following steps: adding bentonite in a certain proportion into powdered iron to grind, pelletize and dry to obtain green balls; burdening the green balls with block limestones and block semi coke in a certain proportion; adding to a rotary kiln from a kiln tail for oxygenating reducing roasting; meanwhile, throwing powdery limestones from a kiln head to enhance a CO reducing atmosphere in a high-temperature section of the rotary kiln; dry-separating the directly reduced high-temperature materials through a vertical cooling gasifier; recycling the semi coke screened by non-magnetic materials obtained by dry separation for the rotary kiln, and screening the magnetic materials to obtain directly reduced metallized pellets. After the metallized pellets are added into a blast furnace, the coke amount consumed by reducing the oxidized pellets can be saved, and meanwhile, the utilization coefficient of the blast furnace is improved.

The invention provides a novel metallurgy and casting integration method, which is characterized by comprising the following steps of: proportioning and mixing fine iron powder and dust coke, adding an adhesive, and performing cold moulding to prepare iron coke pellets; charging the iron coke pellets in an internal combustion high temperature furnace, and roasting at high temperature by isolating air; proportioning the internal combustion iron coke pellets and pig iron, and smelting in a smelting furnace to obtain qualified molten iron; and finally casting into pig iron castings in various specifications and models. In the novel metallurgy and casting integration method is continuously carried out stably in the high temperature furnace in the uniform reducing atmosphere, the hot strength and air permeability of the iron coke pellets are improved, the defects of high energy consumption and high pollution of a blast-furnace ironmaking method are overcome, process energy consumption for each ton of iron can be reduced by about 300kg of coke, the pig iron cost is reduced by about 600 yuan / ton, and the capital investment for building a sintering plant is saved, and return ore and pollution are avoided.

The invention provides a method for controlling the radial ore coke ratio in the blast furnace distribution process, which includes collecting blast furnace charge parameters and blast furnace body equipment parameters; establishing the functional relationship between each control parameter in the blast furnace distribution process and the currently formed distribution surface; establishing the currently formed distribution surface. The functional relationship between the distribution surface and the distribution surface after the material surface drops; establish a blast furnace distribution process control model to describe the relationship between the blast furnace distribution radial ore coke ratio curve and various control parameters; use the blast furnace distribution process The control model determines the optimal control parameters and controls the current blast furnace distribution process in real time; when the error of the radial ore coke ratio curve in the current real-time control process of the blast furnace distribution process is greater than the error allowable value, the blast furnace distribution process control model is re-established, otherwise Complete the current blast furnace distribution process according to the current radial ore-to-coke ratio curve. The invention can provide real-time material surface shape, effectively guide operators to improve the charging system, correct the distribution matrix, and adjust the distribution of the furnace material.

A high-efficient energy-saving magnesite kiln is provided, which is an improvement of magnesite kiln structure, and solves the problems of poor quality, coke consumption and high cost of magnesia fired in the past magnesite kilns. The invention is composed of a kiln, an air supply tubular loop and a valve. At least two air supply tubular loops are provided on the kiln wall; the valve is provided in the air supply tubular loop connected with a blower; an air outlet is provided on the kiln wall and is distributed on the kiln wall in tubular shape; the cycle number of the air outlets is the same as the quantity of the air supply tubular loop; the air outlet is communicated with the corresponding air supply tubular loop. The invention has the advantages that: the wind force in the kiln is reinforced via the air supply by a plurality of air supply tubular loops; the burden is distributed evenly and the oxygen is fully burned so as to improve product quality, save coke and reduce cost.

An iron making method introducing the exhaust gas of a hot-blast stove into blast furnace air comprises the following steps: the exhaust gas of the hot-blast stove is introduced to the inlet of a blast furnace blower, the blast furnace blower simultaneously draws off the exhaust gas of the hot-blast stove and air or a special blower is mounted to draw off the exhaust gas of the hot-blast stove, and the drawn exhaust gas of the hot-blast stove is introduced into the blast furnace air, is heated by the hot-blast stove and is blasted to the tuyere area of a blast furnace. The iron making method is characterized in that the exhaust gas of the hot-blast stove is introduced into the blast furnace air, is heated and is blasted to the tuyere area of the blast furnace. The iron making method needs heat compensation and realizes the compensation through improving the air temperature and the rich oxygen. The temperature of the preheating combustion supporting air of a preheating furnace is above 500DEG C, the combustion temperature can reach 1550DEG C only through using the blast furnace gas, the supply air temperature reaches above 1350DEG C, and the temperature of the exhaust gas decreases to below 100DEG C. The iron making method introducing the exhaust gas of the hot-blast stove into the blast furnace air greatly adjusts the output, reduces the coke ratio and reduces the CO2 emission.

The invention discloses a method for using coking coal powder as iron making fuel, which relates to a method for producing the coking coal powder into the fuel for iron making. The invention is researched to mainly solve the problem that the present coking coal powder is mostly used for burning bricks or being doped in coal to produce forming coal, and energy sources are fully utilized, to cause very large waste. The coking coal powder is mixed with lime or / and cohesive coal powder through the invention, and mechanical ball making is performed; the weight ratio of the coking coal powder and the lime is 100 : 2 to 6; the weight ratio of the coking coal powder and the cohesive coal powder is 100 : 6 to 9. The invention has the advantages that the coking coal powder is used as the iron making fuel, coking coal is saved, the useful value of the coking coal powder is enhanced to ensure the energy sources to be fully utilized, the waste is avoided, and the production cost of enterprises is also reduced.

The invention relates to a technology and equipment used in fire ore-smelting electric furnace smelting production, in particular to a movable electric furnace coal injection method for replacing coke by anthracite in electrosmelting by a fire method. The method is characterized in that when raw materials in a smelting furnace is heated to a fusion state, a mixture of anthracite powder and air or a mixture of anthracite powder and oxygen is added below the liquid level in the furnace. The invention is obviously suitable for all production technologies adopting electric furnaces for smelting and needing carbonaceous raw materials, thereby saving electric energy and coke.

The invention relates to a system and a method for adjusting the concentration of combustible components in dry quenching circulating gas. The system comprises a coke powder cooling device and an air introduction device; and the coke powder cooling device consists of a coke powder surge bin and a coke powder cooler, and the air introduction device consists of an air supply fan, an air preheater and an air distributor. By changing the position and mode of air introduction in the dry quenching system, the working efficiency of the primary dust remover is improved, and the operation and maintenance period of the primary dust remover and the waste heat boiler is prolonged; and the carbon dissolution reaction amount of coke breeze particles in the annular air channel and the primary dust remover is reduced, and coke breeze waste heat collected by the primary dust remover is recycled, so that the economic benefit of the coke dry quenching system is improved, and meanwhile, the operation stability of the coke dry quenching system is improved.

A heat exchanger intensive heat exchanger rig which belongs to heat exchanger field, is especially suitable for checker brick made of refractory which is used in regenerator of hot blast stove duringblast furnace ironmaking production. The apparatus includes pipe heat exchanger and intensive heat exchanger rig, whose characteristic is that the intensive heat exchanger rig is formed of single augertype or several vane type whirlpool device corresponding to flowing medium in pipe, and installed distantly on axial direction of the hole in the heat exchanger, its radial width W is 0.2-1.0R, angleof swing alpha is 0-18deg.C , axial spacing is 8-48R and the end of vane is streamline form. The invention is used as hot blast stove checker brickmaking whose heat transfer coefficient is raised totimes of 1.7-3.5, beat exchange efficiency increasing notably, saving coke and reducing energy cost, and increasing both quantity and quality of pig iron production.

The invention relates to a process and equipment in pyrogenic ore-smelting electric furnace production, in particular to a mobile electric furnace coal injection method using bituminous coal for replacing coke in pyrogenic electric furnace smelting. The invention is characterized in that when raw materials in a smelting furnace are heated to a molten state, a mixture which comprises bituminous coal powder and air or comprises bituminous coal powder and oxygen gas is introduced into the furnace below the liquid level. Obviously, the method of the invention is suitable for all production processes which use electric furnaces for smelting and need the addition of carbonaceous raw materials, thereby saving electric energy and coke.