16results about How to "Improve roasting effect" patented technology

The invention discloses a graphite electrode roasting device based on a thermal uniformity effect, and relates to the field of graphite electrode processing equipment.The graphite electrode roasting device comprises a roasting furnace, the roasting furnace comprises a furnace shell, a roasting chamber is arranged in the furnace shell, mounting chambers are arranged on the two sides of the roasting chamber, and a fuel gas inlet pipe is communicated with the interior of the roasting chamber; and a controller is fixed on the top surface of the furnace shell. According to the graphite electrode roasting device based on the thermal uniformity effect, a worm, a worm gear and a lead screw can be driven by a second servo motor to rotate together, and then a sliding block and a sliding rod are driven by the lead screw to move in the axial direction of the lead screw; a first trapezoidal block is pushed by a sliding rod, so that a second trapezoidal block and a connecting plate can drive a first placement plate to move upwards under the limitation of a fixing column, and then the graphite electrode is lifted through the first placement plate, so that the bottom of the graphite electrode can be intermittently heated, the graphite electrode cannot be damaged, and the service life of the graphite electrode is prolonged. And all parts of the graphite electrode are uniformly heated.

The invention provides a visual inspection ignition intensity control system and method. The system comprises a sintering machine; the ignition furnace comprises a gas inlet pipeline and a burner connected with the gas inlet pipeline, and the burner is used for sintering materials on the sintering machine; the image shooting piece is used for collecting the image information of the color of the flame generated by the burner; the control terminal is used for receiving the image information collected by the image shooting piece and adjusting the internal flow of the air inlet pipeline according to the image information; according to the invention, the flame image in the ignition furnace is acquired through the image shooting piece, the flame image is analyzed through the control terminal, and the gas or air supply flow is automatically corrected according to the analysis result, so that the optimal roasting effect is achieved.

The invention discloses a dry grinding, automatic grading and thermochemical activation method for coarse ore powder, which comprises the following steps: 1) mixing limonite and specularite according to a ratio of 7: 3, and carrying out dry grinding to form embedded novel fine grinding iron ore powder; 2) dynamically drying for more than 28 seconds through a thermal medium at 450-550 DEG C to remove 1.5-6.5% of crystal water from materials entering a mill, promoting conversion of 10-30% of limonite phase into hematite, reducing the heat sensitivity and burning loss of the hematite, and improving the roasting performance of the pellets; (3) through dynamic drying-vertical roller milling integrated pretreatment, the surface activity and the surface energy of the coarse iron ore powder are improved under the action of a thermal medium and mechanical force; and (4) finished fine ground iron powder collected by the cloth bag powder collector is conveyed to a finished product bin for storage through a closed chute and a bucket elevator, is metered by a sealed belt weigher, is humidified by a humidifier and then enters an M1 belt to participate in pellet batching. According to the method, the adding proportion of specularite and limonite powder in pellet production is greatly increased, the wide caliber of pellet raw materials is achieved, and the raw material production cost of pellet ore is reduced.

The invention relates to the technical field of roasting devices, and discloses a roasting device for carbon product production, which comprises a roasting box, mounting ports are formed in two sides of the roasting box at equal intervals, a protection frame is mounted on one side of each mounting port, a fan is mounted in the protection frame, and a mounting box is slidably connected to the top of the roasting box. According to the carbon product roasting device, a rotating motor is arranged and started, in the process of roasting a carbon product, a gear A drives a gear B to rotate, so that a rotating cylinder at the top rotates, a rotating disc at the top rotates, under the action of other rotating cylinders, the other rotating discs rotate together, in the process, a fixing rod does not rotate, and in the process, the fixing rod does not rotate; according to the carbon product roasting device, the fixed gear does not rotate, and the transmission gear rotates under the action of the fixed gear, so that the transmission gear drives the placing barrel to rotate, the carbon products in the placing barrel are roasted more comprehensively, and the roasting effect of the device is improved.

The present invention relates to the technical field of energy-saving roasting of coated sand, and discloses a regenerative coated sand roasting furnace, comprising a main body, a combustion chamber is arranged in the main body, an igniter facing the combustion chamber is installed on the main body, and a feed chamber is fixed on one side of the main body, one side of the combustion chamber is connected to the feed chamber, and the side of the combustion chamber away from the feed chamber is connected to a preheating bag, and the preheating bag is connected to an exhaust pipe; a baffle is arranged in the feed chamber, and a preheating chamber connected to the exhaust pipe is opened in the side wall of the feed chamber; the preheating chamber is connected to the exhaust pipe. The present invention has a simple structure, and the waste gas discharged from the combustion chamber is sent into the feed chamber to preheat the sand particles. The sand particles with a certain temperature enter the combustion chamber, which can reduce the heat consumption in the combustion chamber, thereby reducing the use of natural gas and reducing the roasting cost of the sand particles.

The utility model discloses a roasting furnace for carbon production. The roasting furnace comprises a furnace body and a stirring mechanism, exhaust pipes are arranged in exhaust ports formed in the upper end of the furnace body, a cavity is formed in the lower side in the furnace body, a sealing cover is hinged to the front side in the cavity through a hinge, and a protective door is hinged to the right side in the furnace body through a hinge; the stirring mechanism comprises a screw rod, an adjusting seat, an output rod and stirring fan blades, the screw rod is rotationally connected to the upper side of the left wall of the furnace body through a bearing, the adjusting seat is in threaded connection with the screw rod through a threaded hole formed in the middle of the right end of the adjusting seat, the adjusting seat is slidably connected with the top wall of the furnace body, and the output rod is rotationally connected to the middle of the lower end of the adjusting seat through a bearing; according to the roasting furnace for carbon production, the coverage area of the stirring fan blades is further increased, the structure is simple, meanwhile, the cost is relatively low, it is ensured that carbon can be evenly heated in the roasting process, and therefore the problem that the roasting quality is different due to uneven carbon distribution is avoided.

The invention relates to the field of roasting furnace equipment, and particularly discloses a high-temperature roasting furnace for denitration catalyst preparation, the high-temperature roasting furnace comprises a furnace body, a base and a fixing rod, a baffle, a moving assembly and a placing assembly are arranged in the furnace body, the moving assembly can move along the fixing rod, the placing assembly comprises a placing frame, a limiting plate and a rotating shaft, and the placing frame comprises mesh plates arranged at the two ends; the limiting plate is detachably connected with the mesh plate, the rotating shaft is arranged on the mesh plate, the stirring assembly comprises a mounting ring and a plurality of stirring pieces, the mounting ring is arranged on the rotating shaft in a sleeving mode and used for driving the rotating shaft to rotate so that the placing frame can rotate, the stirring pieces are evenly distributed in the circumferential direction of the mounting ring, and the ends, away from the mounting ring, of the stirring pieces can make contact with the baffle. According to the high-temperature roasting furnace for preparing the denitration catalyst, during roasting, rotation of the furnace body, translation of the moving assembly and rotation of the placing frame are synchronously carried out, so that materials are uniformly heated during roasting, the roasting quality of the denitration catalyst is improved, and the yield of the denitration catalyst is increased.

The utility model belongs to the field of smelting, and particularly relates to a six-electrode ferroalloy submerged arc furnace which comprises a first electrode group, a second electrode group, a first transformer group and a second transformer group, the first electrode group comprises three first electrodes which are arranged in a triangular shape, the first transformer group comprises three first transformers, and every two first electrodes are connected through one first transformer; the second electrode group comprises three triangular second electrodes, the second transformer group comprises three second transformers, and every two second electrodes are connected through one second transformer; the first electrodes and the second electrodes are uniformly arranged at intervals around the same axis, and through the arrangement of the six electrodes, the diameters of the electrodes can be effectively reduced, and heating points are increased, so that a better heating effect is obtained.

The utility model relates to a roasting device for catalytic cleaning agent production, which comprises a box body and a box cover, an inner cylinder for placing a catalytic cleaning agent precursor is arranged on the inner wall of the box body, and a rotary cylinder rotationally connected with the inner bottom wall of the box body is fixedly mounted at the bottom of the inner cylinder. A driving assembly used for driving the inner cylinder to rotate is arranged on one side of the box body, an adding assembly used for adding roasting gas is arranged in the box body, the adding assembly comprises a fixed cylinder which is fixedly installed on the inner bottom wall of the box body and extends into the inner cylinder, and a plurality of stirring blades are fixedly installed on the surface of the fixed cylinder; and a plurality of one-way spray heads distributed with the stirring blades in a staggered mode are fixedly installed on the surface of the fixing cylinder, and a heating air supply assembly used for heating a catalytic cleaning agent precursor is arranged in the connecting box. According to the roasting device for producing the catalytic purifying agent, a catalytic purifying agent precursor can be fully reacted, and the roasting effect of the catalytic purifying agent is greatly improved.

The invention discloses a preparation method of battery grade manganese sesquioxide. The method comprises the steps of raw material preparation, dehydration treatment, powder preparation, staged heating, oxygen supply, stirring and overturning, product collection and the like. Specifically, sulfate system manganese oxalate is selected as a raw material, and manganese oxalate powder suitable for roasting is obtained through dehydration treatment and powder preparation. In the roasting process, the manganese oxalate powder is ensured to be converted into high-purity battery-grade manganese sesquioxide through staged heating and accurate control of oxygen supply. In addition, an efficient solid-liquid separation and washing process is adopted, so that the purity and the particle size distribution of the product meet the requirements of a battery material. The preparation method has the beneficial effects that the prepared product has high purity and uniform particle size distribution, and the performance and the stability of the battery can be remarkably improved. In addition, the optimized process steps reduce the generation of wastewater and waste gas, meet the environmental protection requirement, simplify the production flow and improve the production efficiency and economical efficiency.

This utility model discloses a combustion rack device with adjustable function, including a base, a roasting box, and a combustion chamber and a burner head disposed inside the roasting box, as well as nested fixing columns and fixing rods. The fixing columns and fixing rods are located at the corners of the base and the roasting box. A roasting box is disposed inside the roasting box, and removal plates are fixedly connected to the left and right sides of the upper end of the roasting box, respectively engaging with the left and right sides of the upper end of the roasting box. This combustion rack device with adjustable function facilitates appropriate adjustment of the height of the roasting box. During combustion, the cover plate engages with the upper end of the roasting box to prevent heat loss. Furthermore, combined with the removal plates fixed to the left and right sides of the upper end of the roasting box, the outer side of the upper end of the roasting box is located outside the roasting box. During cleaning, only the removal plates need to be pulled to remove the roasting box from the roasting box to clean the residue, without needing to reach into the roasting box for operation.

The invention relates to a static sintering process and system for preparing high-whiteness and high-purity aluminum hydroxide, and the static sintering process comprises the following steps: firstly, taking a raw material crushed to process control fineness as a pre-powder material, carrying out raw material preparation and blank forming on the pre-powder material to obtain a blank, sintering the blank to obtain clinker, carrying out clinker dissolution on the clinker to obtain slurry, and sintering the slurry to obtain the high-whiteness and high-purity aluminum hydroxide. Carrying out slurry desilication, carbon component reaction, hydrogen-aluminum separation and drying on the slurry to prepare high-whiteness and high-purity aluminum hydroxide; wherein the raw materials comprise solid wastes such as fly ash; the blanks are sintered into six polygon prism-shaped blanks which are stacked in two rows and three groups, the blanks are roasted in an industrial tunnel kiln in a temperature programming mode, and the roasting temperature ranges from 800 DEG C to 1100 DEG C. According to the invention, solid wastes such as fly ash, coal gangue, carbide slag and the like, pulverized coal and sodium carbonate are crushed into materials with the same fineness, high-whiteness and high-purity aluminum hydroxide can be obtained through an alkaline static sintering process, the recovery rate of aluminum in the solid wastes is about 90%, and harmless, resource and synergistic utilization of the solid wastes such as fly ash and the like is realized.

The utility model discloses a carbon roasting furnace flame path wall structure which comprises at least two symmetrically-arranged flame path wall bodies, the top ends of the two flame path wall bodies are connected with a furnace face block, and a heat preservation layer and a supporting cover plate are arranged between the top ends of the flame path wall bodies and the furnace face block. The supporting cover plate is connected to the top ends of the two flame path wall bodies, and the heat preservation layer is arranged between the supporting cover plate and the furnace face block. The heat preservation layer comprises a first positioning block, a second positioning block and a fiber blanket, the first positioning block and the second positioning block are both located at the top end of the supporting cover plate and symmetrically distributed on the two sides of the supporting cover plate in the width direction, and the top end of the first positioning block and the top end of the second positioning block are both connected with the bottom end of the furnace surface block; the first positioning block, the second positioning block, the upper end face of the supporting cover plate and the lower end face of the furnace face block define a closed cavity, and the closed cavity is filled with a fiber blanket.

The utility model discloses a rotary hearth furnace material distribution device with a material flow adjusting function, which belongs to the technical field of vibration material distribution and comprises a material distribution groove body, a screening bottom plate is arranged at the groove bottom of the front end of the material distribution groove body, and a distribution assembly is arranged at the position, located at the tail end of the screening bottom plate, of the material distribution groove body in the width direction of the screening bottom plate. The distribution component divides the distribution groove body into a plurality of guide chutes along the width direction; a baffle plate is arranged at the rear end of the guide chute of the distribution tank body, and a discharge port is formed in the bottom of the distribution tank body at the front side of the baffle plate; wherein the distributing groove body is located at the rear end of the screening bottom plate and is provided with a distributing plate in the width direction, and a height-adjustable material passing gap is formed between the bottom edge of the distributing plate and the screening bottom plate. The rotary hearth furnace is simple in structure and convenient to install, the uniformity of material flow in the furnace can be greatly improved, and the metallized pellet roasting effect and the production efficiency of the rotary hearth furnace are improved.

The utility model discloses a reduction roasting system for performing gas-based reduction roasting by using coal in the technical field of mineral separation. The system comprises a gas generator and a roasting furnace, the gas generator comprises a furnace body, the furnace body is provided with a carbon dioxide inlet and a coal feeding port, and the carbon dioxide inlet is communicated with a carbon dioxide source through a carbon dioxide pipeline; coal enters the furnace body through the coal feeding port and reacts with carbon dioxide to generate carbon monoxide; a carbon monoxide outlet is formed in the top of the furnace body and communicated with a gas mixing tank through a carbon monoxide pipeline, inert gas is added into the gas mixing tank, the gas mixing tank is communicated with an inert gas source through an inert gas pipeline, the outlet end of the gas mixing tank is communicated with the roasting furnace through a mixed gas pipeline, and the roasting furnace is provided with a reducing gas inlet communicated with the mixed gas pipeline. The roasting furnace is provided with a material inlet for adding materials. The device has the advantages that rich coal is adopted to prepare reducing gas for reduction roasting, the reaction rate is increased, and the roasting effect is improved.

The invention discloses a siderite treatment method. The siderite treatment method comprises the steps that S1, siderite lump ore is conveyed to a belt type pellet roasting machine; s2, carrying out dehydration treatment on the siderite lump ore; s3, carrying out pre-oxidation treatment on the siderite lump ore; s4, carrying out oxidizing roasting treatment on the siderite lump ore; s5, the siderite lump ore is subjected to soaking treatment; and S6, cooling treatment is conducted on the siderite lump ore. According to the siderite treatment method, efficient treatment and utilization of siderite lump ore can be achieved, the ore quality is improved, and more optional lump ore resources are provided for blast furnace or converter smelting. The invention further discloses siderite treatment equipment.