38results about How to "Save coke" patented technology

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 present invention relates to method of online inhibiting coking in hydrocarbon cracking apparatus. The method is that after the coke is burnt out, the hydrocarbon cracking apparatus is pre-treated with chemical(s) containing S, Si and Mg and inert gas at 400-1000 deg.c for 1-8 hr. The technological process first poisons the catalyst n the furnace tube surface and then deposit one layer of compact ceramic coating combined tightly to the furnace tube, and can reduce coking greatly and increase the production period. The method is simple and may be completed repeatedly.

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 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 preparation method for a solvent-type iron ore composite aggregate comprises: ensuring the proper CaO and 2-4% MgO with weight o.5-2.0 in the first process; then coming the secondary time, wrapping one block layer evenly of CaCo3 powder, dolomite powder, hematite dried powder or acidic iron concentrate ore; then, baking as the acidic aggregate baking temperature and means to ensure the ore not bond. This invention overcomes bonding problem with low cost and little pollution, and improves blast furnace yield even meets the pH balance or desulfurization request.

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 relates to a heavy oil and biomass hydrogenation coliquefaction treatment process in which one or two of heavy oil and biomasses are used as raw materials in vacuum gas oil with the distillation range of 360-540 DEG C and FCC (Fluid Catalytic Cracking) oil slurry. In the process, an oil-soluble transition metal organic compound with hydrogenation activity is used as a catalyst, dimethyl sulfide is used as a vulcanizing agent, a full-back-mixing type empty barrel reactor is used as a slurry column hydrogenation reactor, the reaction temperature is uniform, and the structure is simple. By using the process, the conversion rate of the biomasses can be up to over 90wt% at lower hydrogen pressure of 4-8MPa and the temperature of 370-430 DEGC, and the yield of oil phases is up to over 70wt%. A dispersive hydrogenation catalyst adopted in the process can be used for greatly reducing the quantity of green cokes and taking a better deoxidization effect on the biomasses.

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 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.

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 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 discloses a method for regeneration treatment of rock wool waste mixture, which is characterized in that: the first step is to crush the rock wool waste; the second step is to put raw materials into a three-compartment batching machine and mix them with additive A and additive B; The third step is to add water and stir; the fourth step is to transport the evenly stirred material to the recycled rock wool raw material molding machine through the feeding conveyor; the fifth step is to form; the sixth step is to maintain; the seventh step is to store. The regenerated rock wool raw material produced by the method of the present invention can be used as the main raw material of producing rock wool; It can be produced for a longer period of time without frequent shutdowns and slag cleaning; secondly, because the recycled rock wool raw material produced by the present invention is a composite material, the melting temperature is low, 30% of coke can be saved, and the cotton production efficiency can be increased by 25%. The problem of tight raw materials.

The invention belongs to the technical field of metallurgy and discloses a sinter cooler lump ore braking system. A lump ore material pile, a lump ore proportional adding device, a computer, a sinter, a cooler, a cold griddle, a blast furnace overhead bin and a blast furnace are sequentially connected to form the system, wherein the lump ore proportional adding device comprises a lump ore feedingbin, a quantitative lump ore feeding device, a lump ore metering device and a lump ore metering control cabinet; the quantitative lump ore feeding device is arranged below the discharge hole of the lump ore feeding bin; the lump ore metering device is arranged below the quantitative lump ore feeding device; the quantitative lump ore feeding device, the lump ore metering device and the sinter are respectively connected with the lump ore metering control cabinet; and the lump ore metering device is also connected with the cooler. The system provided by the invention has simple structure, recycles waste heat of the cooler for drying and dehydrating wet lump ore, and finally cools to about 80 DEG C, thus increasing the temperature of charged lump ore, maintaining the reasonable temperature atthe blast furnace top to be 100-170 DEG C, and prolonging the service life of a bag-type dust collector in follow-up processes.

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.