31results about How to "Guaranteed sintering effect" patented technology

The invention discloses a tunnel mesh belt sintering furnace, belongs to an industrial furnace, and in particular relates to the technical field of dehydrochlorination technology for silicon nitride, titanium nitride, aluminum nitride and other nano powder at 850 DEG C or below. The tunnel mesh belt sintering furnace is characterized in that: the periphery and the top of a hearth consist of ceramic fiber boards; the bottom is supported by light foamed bricks; an inner muff tube made of Cr25Ni20 heat-resistant stainless steel is arranged on the light foamed bricks; the hearth is communicated with five paths of process gas; each path is controlled by a float flow meter; a hearth opening cooling section is divided into two parts, namely a natural cooling section and a forced cooling section; the forced cooling adopts dipping bath type water cooling; and a unique limiting correction device is arranged on two sides of a transmission mesh belt of an equipment inlet platform and an equipment outlet platform. The tunnel mesh belt sintering furnace has the advantages of firm and stable structure, no roof fall, high temperature control accuracy, low energy consumption, clean hearth, uniform temperature, stable long-term work and the like, and is convenient and effective to operate,.

The invention discloses a sintering device for glass preparation. The sintering device comprises an outer frame, wherein the top of the outer frame is fixedly connected with a support column, the topend of the support column is fixedly connected with a top frame, the left side of the top frame is fixedly connected with a first motor, and one end of the output shaft of the first motor penetrates through the top frame and extends to the inside of the top frame. The invention relates to the technical field of glass preparation. The sintering device for glass preparation has the advantages that the purpose of conveniently pulverizing materials is achieved, a pulverizing device is integrated on the sintering device, production steps are simplified, the pulverizing degree is effectively controlled, subsequent sintering is facilitated, the use by people is facilitated, the increase of the discharge speed is facilitated, the materials are prevented from staying on a feed plate, the operationof the device is ensured, feeding of the materials is facilitated, furthermore, the operation of the device is effectively ensured, the working efficiency is increased, realization of automatic control of the sintering temperature is facilitated, manual control is not needed, the sintering effect is ensured, and the practicability of the device is increased.

The invention discloses a spark plasma sintering mold adopting polycrystalline mullite fibers for heat preservation, which comprises an inner mold fixedly arranged on outer layers ofpolycrystalline mullite fibers, a plurality of support legs are fixedly arranged on the outer layers of the polycrystalline mullite fibers, a pressing plate is connected to the inner mold in a sliding manner, an annular groove is formed in the side wall of the inner mold, a rotating ring is rotatably connected to the annular groove, a rotating mechanism is installed on the inner mold, the rotating mechanism is matched with the rotating ring, two fixing blocks are fixedly installed on the outer layers of the polycrystalline mullite fibers, connecting rods are installed on the two fixing blocks, and positioning mechanisms are installed between the two connecting rods and the two fixing blocks. The spark plasma sintering mold has the advantages that a certain degree of stirring effect can be applied to metal powder placed in the inner mold, so that the metal powder is more uniformly distributed in the inner mold, the quality of a sintered product is improved, and the mold has relatively low use requirements on auxiliary machinery and is convenient to move.

The invention discloses an iron ore well-blended powder with pelletizing undersize for reducing cost and improving efficiency. The iron ore well-blended powder includes, by weight, 5-15% of the pelletizing undersize, 15-30% of Brazilian Carajas sinter feed, 10-25% of Brazilian coarse iron ore powder, 15-25% of West Australian powder, 15-25% of Australian FB powder, and 5-15% of Indian coarse ironore powder. In the invention, the byproduct, pelletizing undersize, which is generated during a direct iron reduction production process, is successfully applied to sinter the well-blended ore; by matching proper iron ore, adverse factors, such as low assimilation temperature of the pelletizing undersize, poor liquid-phase flowability and poor generation capability of calcium ferrite, are overcome, thus guaranteeing the application effect of the pelletizing undersize.

The invention belongs to the technical field of water storage ceramsite sintering, and discloses a water storage ceramsite sintering device. The water storage ceramsite sintering device comprises a sintering furnace, a first conveying mesh belt, a second conveying mesh belt and a mesh belt driving assembly; the first conveying mesh belt and the second conveying mesh belt are fixed on the mesh beltdriving assembly, and the first conveying mesh belt and the second conveying mesh belt are arranged in the sintering furnace; and in the conveying direction, the tail end of the first conveying meshbelt is located above the second conveying mesh belt. According to the water storage ceramsite sintering device, the defect that the ceramsite sintering degree is not uniform can be overcome, the riskof adhesion and hardening is reduced, and the quality of the water storage ceramsite is improved.

The invention relates to the technical field of sintered NdFeB magnets, in particular to an isostatic pressing oil removal system. A first conveying belt with a grating is arranged, multiple first cleaning rollers are arranged on the first conveying belt, a second conveying belt synchronous with the first conveying belt is arranged above the middle segment of the first conveying belt, second cleaning rollers corresponding to the first cleaning rollers in position are arranged on the second conveying belt, the first cleaning rollers and the second cleaning rollers are driven by a friction beltto rotate, blocking of the grating is used, and therefore in the forward process of the first conveying belt, a magnet body pressing blank is subject to friction cleaning due to the first cleaning rollers and the second cleaning rollers, a washing solution can sufficiently dissolve isostatic pressing oil, and the isostatic pressing oil can be sufficiently removed.

The invention provides a lead-free acoustic vibration piezoelectric transduction material and a preparation method thereof. The chemical composition of the lead-free acoustic vibration piezoelectric transduction material is (1-x) (K0. 5Na0. 5) (Nb0. 95Sb0. 05) O3-xBi0.5 (Na0.82K0.18)0.5HfO3, wherein x ranges from 0.03 to 0.05. The preparation process provided by the invention is simple, green andenvironment-friendly, and the prepared lead-free acoustic vibration piezoelectric transduction material has a good temperature stability characteristic within a certain temperature range while ensuring a high piezoelectric constant, and has a wide application value.

The invention discloses an online quick trolley changing method of a sintering machine, belongs to the technical field of sintering machines and provides a method which is used for quick trolley change of the sintering machine in an online state and is more convenient to operate.A pull gap of 20-50 mm is formed in a tail swing frame in the tail direction through ejection.Therefore, when a trolley required to be changed is hoisted later, gaps of 10-20 mm can be reserved between the trolley required to be changed and front and back adjacent trolleys through front-and-back folding and pulling, and the trolley required to be changed can be more conveniently hoisted away.In addition, the trolleys in front and back of the trolley required to be changed can be also fixed by further arranging limiting parts, the phenomenon that the front and back adjacent trolleys move towards the middle after the trolley required to be changed is hoisted away can be avoided, and a standby trolley can be rapidly and accurately transferred to the position where the trolley required to be changed is located.Furthermore, a material corresponding to the upper portion of the trolley required to be changed can be also wetted to make ignition and sintering of the sintering machine unable, and further convenience is brought to better trolley operation.The online quick trolley changing method can bring huge economic benefits during actual work.

The invention discloses a fuel gas and steam coupled sintering machine. The fuel gas and steam coupled sintering machine comprises a sintering trolley running in the sintering direction and an ignition furnace device arranged above the sintering trolley and further comprises a fuel gas and steam coupling device arranged above the sintering trolley and located behind the ignition furnace device in the sintering direction; the fuel gas and steam coupling device sequentially comprises a fuel gas injection unit, a fuel gas and steam coupling injection unit and a steam injection unit which are isolated from one another in the sintering direction. After overall carbon reduction of sintered ore, heat compensation is carried out on an upper-layer material area which is most required to be subjected to heat compensation through fuel gas injection. The gas injection starting time is reasonable, upper-layer materials are timely subjected to gas heat compensation, the quality of upper-layer finished product sintering ore is improved, the overall gas injection enhanced sintering effect is remarkable, and sintering is facilitated. In other words, heat compensation can be carried out on temperature drop generated by the steam through fuel gas injection, local high temperature generated by the fuel gas can be reduced through the steam, and therefore influences caused by the steam temperature drop and the local high temperature of the fuel gas can be eliminated, and the sintering effect is guaranteed.

The invention relates to a gas injection and distribution device and a control method thereof, and belongs to the technical field of sintering equipment. The fuel gas injection and distribution devicecomprises an injection cover, an injection branch pipe, multiple layers of injection pipe rows, a charge level negative pressure detector and a control system. One end of the injection branch pipe isconnected with an air source, and the other end of the injection branch pipe is provided with a plurality of branch pipes; The multiple layers of injection pipe rows are in one-to-one correspondencewith the multiple branch pipes respectively, the multiple layers of injection pipe rows are distributed at intervals in the Z direction, and each layer of injection pipe row is connected with one branch pipe through a flow control valve; the charge level negative pressure detector is arranged at the upstream of the injection cover and is used for detecting the charge level negative pressure of thesintering charge of a sintering machine trolley to enter the injection cover; and the control system is electrically connected with the charge level negative pressure detector and the flow control valves, and the control system is used for controlling the flow control valves to work in response to a charge level negative pressure value detected by the charge level negative pressure detector so asto realize fuel gas injection of at least one layer of injection pipe row. The fuel gas injection and distribution device is good in auxiliary effect and high in safety coefficient.