The Experts below are selected from a list of 297 Experts worldwide ranked by ideXlab platform
Jun Ming Zhang - One of the best experts on this subject based on the ideXlab platform.
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Vertical Shaft Impact Crusher Wear and Anti-Wear Measures
Advanced Materials Research, 2014Co-Authors: Jun Ming ZhangAbstract:In order to reduce the vertical shaft Impact Crusher wearing parts wear and tear, improve the service life and reliability, analyzes the performance characteristics of the aircraft and wear characteristics, summarizes all the factors that influence the wear and tear, and the anti-wear measures are put forward.
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The Geometrical Model of Vertical Shaft Impact Crusher Rotor System
Advanced Materials Research, 2014Co-Authors: Jun Ming ZhangAbstract:The Solid Works environment, through the methods of field surveying and mapping of a vertical shaft Impact Crusher for structural reverse and design,counter rotating subsystem of the spare parts for 3D geometric modeling. Counter rotating subsystem figure condition check, the 3D model is proved to be correct, for the next dynamic modeling of the model combined with removal and the basis for dynamic simulation.
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Vertical Shaft Impact Crusher Wear Theory Research
Advanced Materials Research, 2012Co-Authors: Jun Ming ZhangAbstract:Using the Impact Crusher vertical shaft rotor rotating speed, the vertical shaft Impact Crusher work the Impact of the speed and Impact, can improve the Crusher of broken ability and production efficiency. The vertical shaft Impact Crusher the materials in the parts of the Impact of the Crusher collision effect, can effectively reduce the wear and tear of the machine.
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Wear of Throwing End of Vertical Shaft Impact Crusher
Applied Mechanics and Materials, 2012Co-Authors: Jun Ming ZhangAbstract:Statistics show that China currently applied in the vertical shaft Impact Crusher, the intensity itself is not a major problem affecting the life, the most critical issue is the main material throw head wear . Vertical shaft Impact Crusher rotor system based on virtual prototyping, combined with the actual working conditions and research objectives, in ADAMS dynamic simulation of the rotor system, a spindle speed at 1600r/min obtained when different materials on the first intermediate principal cast material suffered Impact relationships
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Research on the Load Distribution of Throwing Ends in Vertical Shaft Impact Crusher
Advanced Materials Research, 2010Co-Authors: Fang Zhao, Jun Ming Zhang, Wei Wang, De Rong DuanAbstract:With ADAMS dynamics software to simulate the stone movement in the vertical shaft Impact Crusher rotor, the law of an Impact frequency and load on the throwing ends with the variation of feed size and rotor speed is studied, the reasons that the middle throwing end is most vulnerable to wear failure and the rotor speed is not as high as possible are explained.
Fang Zhao - One of the best experts on this subject based on the ideXlab platform.
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Study and Implementation on Computer Aided Innovation System based on TRIZ
2016Co-Authors: Changqing Gao A, Fang Zhao, Bo Yang, Wei Guo DAbstract:Abstract. The aim of Computer Aided Innovation (CAI) is to support the engineer’s problem solving process with current design method and knowledge base. TRIZ is developed based on the patents analysis within the cross domain in the world and it is used in innovation design widely. Conflict Matrix, Effect, Standard Solution and Separate Principle are the key TRIZ tools used to resolve the inventive problems. And they can also be used for knowledge representation in the design system. As a Computer Aided Innovation System, Innovation Engine is developed and instructed. The effect of TRIZ methodology and CAI system can be proved with the case analysis of the cavity shape design of the rotor channel in the vertical shaft Impact Crusher. With limited power of electrical motor, there is a technical conflict in a vertical shaft Impact Crusher when requirement of improving break ratio of the stone materials. With the recommended principle (Curvature), the conception of a channel with a curvilinear shape can be gotten
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Research of the Ejection Angle of Guiding Device in Vertical Shaft Impact Crusher Rotor
Applied Mechanics and Materials, 2014Co-Authors: Fang Zhao, Yuan Bo Cai, Na Zhao, Xian Xin ChenAbstract:In this paper, a new rotor with two Impact in the vertical shaft Impact Crusher is analyzed, an effect of the angle at the guide device thrown materials on the velocity that material reach the Impact plate and rebound to a anvil in the crushing chamber are discussed. three mass ejection Angle are simulated by discrete element software EDEM, and the result shows that effect of two Impact of new rotor on acceleration material is best when ejection angle is 25 °.
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Analysis of Particle Motion in Vertical Shaft Impact Crusher Rotor
Advanced Materials Research, 2011Co-Authors: De Rong Duan, Song Wang, Fang ZhaoAbstract:The rotor of vertical shaft Impact Crusher was modeled by SolidWorks and imported into EDEM for dynamic simulation. The average speed, maximum speed, average force, maximum force with time were analyzed in rotor, so the true law of particles motion in rotor would be revealed, indicated that the speed of particle field in rotor increased with the rotor radius at the time of rotor work steady, about 80% of the particles were accelerated to the maximum speed, and the change of speed affected significantly the particle interactions.
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Research on the Load Distribution of Throwing Ends in Vertical Shaft Impact Crusher
Advanced Materials Research, 2010Co-Authors: Fang Zhao, Jun Ming Zhang, Wei Wang, De Rong DuanAbstract:With ADAMS dynamics software to simulate the stone movement in the vertical shaft Impact Crusher rotor, the law of an Impact frequency and load on the throwing ends with the variation of feed size and rotor speed is studied, the reasons that the middle throwing end is most vulnerable to wear failure and the rotor speed is not as high as possible are explained.
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Dynamic Analysis of Tip Set Extra Hard Load of Vertical Shaft Impact Crusher
2009 International Conference on Measuring Technology and Mechatronics Automation, 2009Co-Authors: Jun Ming Zhang, Fang Zhao, Wei Wang, Xiang-bo Ze, Dong-ning SuAbstract:Rotor is the major work components of vertical shaft Impact Crusher and tip set extra hard is the most wearing part of it. Based on the analysis of the structure and the working principles of the vertical shaft Impact Crusher, we set up the three-dimensional model of the rotor in Solid Works. Through the importation of the 3-D model into ADAMS for the dynamic simulation, we simulate the throwing process of the materials when the Crusher is in operation, then gain the variation of the biggest and average Impact force suffered by the tip set extra hard of rotor at different spindle speed. Simulation analysis shows that the speed of the rotor is an important factor that Impacts the crushing quality and efficiency of the vertical shaft Impact Crusher, but the crushing effect is not always rising with the speed increasing and high speed would aggravate the wear and tear of tip set extra hard .The speed range of the rotor is from 1400 to 1500 rpm or from 1600 to 1750 rpm, between which the tip set extra hard suffers balanced force and can operate stably. In addition, in order to fully take into account the Crusher broken quality, efficiency and service life, reducing the value and frequency of the greatest Impact is of vital important, for one thing, the rotor structure and the optimization of the relevant parameters need to be taken into consideration, for another thing, the Impact of the of uniformity of the feed particle size should also be analyzed.
Carina Ulsen - One of the best experts on this subject based on the ideXlab platform.
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Concrete aggregates properties crushed by jaw and Impact secondary crushing
Elsevier, 2019Co-Authors: Carina Ulsen, Ester Tseng, Mirko Landmann, Renato Contessotto, José Tadeu Balbo, Sergio Cirelli Angulo, Henrique KahnAbstract:This paper compares the use of jaw and Impact secondary crushing for producing coarse recycled aggregates from concrete wastes, obtained from road pavement and demolished building materials. The crushing mechanism interferes directly with recycled aggregate properties at different levels: particle size distribution, aggregate shape, generation of micro-fractures, as well as regarding the detachment of porous hardened cement paste from particle surface in order to recover pure, non-porous natural aggregates. However, Crusher selection in the recycling industry is mostly carried out by acquisition and maintenance costs, industry and manufacturer traditional habits, low cost associated with second hand equipment. It also does not consider essential parameters such as the final properties of the desired end-product. Representative samples from two recycling plants were collected after primary Impact Crusher and secondary crushing were performed in a controlled laboratory condition through jaw and Impact Crushers. The aggregates attained were characterized, demonstrating similar density, porosity, particle size distribution and content of attached cement paste. Minor observed differences do not justify the common belief in the industry that Impact Crushers provide an improvement in the quality of recycled aggregates due to the higher detachment of cement paste from aggregates. Keywords: Recycled concrete aggregate, Liberation comminution, Recycled aggregate properties, Impact Crusher, Jaw crushe
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Concrete aggregates properties crushed by jaw and Impact secondary crushing
Journal of materials research and technology, 2018Co-Authors: Carina Ulsen, Ester Tseng, Mirko Landmann, Renato Contessotto, José Tadeu Balbo, Sergio Cirelli Angulo, Henrique KahnAbstract:Abstract This paper compares the use of jaw and Impact secondary crushing for producing coarse recycled aggregates from concrete wastes, obtained from road pavement and demolished building materials. The crushing mechanism interferes directly with recycled aggregate properties at different levels: particle size distribution, aggregate shape, generation of micro-fractures, as well as regarding the detachment of porous hardened cement paste from particle surface in order to recover pure, non-porous natural aggregates. However, Crusher selection in the recycling industry is mostly carried out by acquisition and maintenance costs, industry and manufacturer traditional habits, low cost associated with second hand equipment. It also does not consider essential parameters such as the final properties of the desired end-product. Representative samples from two recycling plants were collected after primary Impact Crusher and secondary crushing were performed in a controlled laboratory condition through jaw and Impact Crushers. The aggregates attained were characterized, demonstrating similar density, porosity, particle size distribution and content of attached cement paste. Minor observed differences do not justify the common belief in the industry that Impact Crushers provide an improvement in the quality of recycled aggregates due to the higher detachment of cement paste from aggregates.
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production of recycled sand from construction and demolition waste
Construction and Building Materials, 2013Co-Authors: Carina Ulsen, Henrique Kahn, G Hawlitschek, Eldon Azevedo Masini, Sergio Cirelli Angulo, Vanderley Moacyr JohnAbstract:Existing construction waste recycling technologies and standards have long been applied in construction and demolition waste recycling. However, they have been essentially focused on the production and use of coarse recycled aggregates. This paper presents a technology that permits the production of high quality recycled sand. The selective removal with a vertical Impact Crusher of the cement paste attached to recycled aggregates and the potential improvements in the quality of the recycled sand that is produced were investigated. The results showed that the proposed method permitted the production of low-porosity sand from construction and demolition waste and may contributes to changing the construction recycling model.
Vanderley Moacyr John - One of the best experts on this subject based on the ideXlab platform.
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production of recycled sand from construction and demolition waste
Construction and Building Materials, 2013Co-Authors: Carina Ulsen, Henrique Kahn, G Hawlitschek, Eldon Azevedo Masini, Sergio Cirelli Angulo, Vanderley Moacyr JohnAbstract:Existing construction waste recycling technologies and standards have long been applied in construction and demolition waste recycling. However, they have been essentially focused on the production and use of coarse recycled aggregates. This paper presents a technology that permits the production of high quality recycled sand. The selective removal with a vertical Impact Crusher of the cement paste attached to recycled aggregates and the potential improvements in the quality of the recycled sand that is produced were investigated. The results showed that the proposed method permitted the production of low-porosity sand from construction and demolition waste and may contributes to changing the construction recycling model.
Henrique Kahn - One of the best experts on this subject based on the ideXlab platform.
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Concrete aggregates properties crushed by jaw and Impact secondary crushing
Elsevier, 2019Co-Authors: Carina Ulsen, Ester Tseng, Mirko Landmann, Renato Contessotto, José Tadeu Balbo, Sergio Cirelli Angulo, Henrique KahnAbstract:This paper compares the use of jaw and Impact secondary crushing for producing coarse recycled aggregates from concrete wastes, obtained from road pavement and demolished building materials. The crushing mechanism interferes directly with recycled aggregate properties at different levels: particle size distribution, aggregate shape, generation of micro-fractures, as well as regarding the detachment of porous hardened cement paste from particle surface in order to recover pure, non-porous natural aggregates. However, Crusher selection in the recycling industry is mostly carried out by acquisition and maintenance costs, industry and manufacturer traditional habits, low cost associated with second hand equipment. It also does not consider essential parameters such as the final properties of the desired end-product. Representative samples from two recycling plants were collected after primary Impact Crusher and secondary crushing were performed in a controlled laboratory condition through jaw and Impact Crushers. The aggregates attained were characterized, demonstrating similar density, porosity, particle size distribution and content of attached cement paste. Minor observed differences do not justify the common belief in the industry that Impact Crushers provide an improvement in the quality of recycled aggregates due to the higher detachment of cement paste from aggregates. Keywords: Recycled concrete aggregate, Liberation comminution, Recycled aggregate properties, Impact Crusher, Jaw crushe
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Concrete aggregates properties crushed by jaw and Impact secondary crushing
Journal of materials research and technology, 2018Co-Authors: Carina Ulsen, Ester Tseng, Mirko Landmann, Renato Contessotto, José Tadeu Balbo, Sergio Cirelli Angulo, Henrique KahnAbstract:Abstract This paper compares the use of jaw and Impact secondary crushing for producing coarse recycled aggregates from concrete wastes, obtained from road pavement and demolished building materials. The crushing mechanism interferes directly with recycled aggregate properties at different levels: particle size distribution, aggregate shape, generation of micro-fractures, as well as regarding the detachment of porous hardened cement paste from particle surface in order to recover pure, non-porous natural aggregates. However, Crusher selection in the recycling industry is mostly carried out by acquisition and maintenance costs, industry and manufacturer traditional habits, low cost associated with second hand equipment. It also does not consider essential parameters such as the final properties of the desired end-product. Representative samples from two recycling plants were collected after primary Impact Crusher and secondary crushing were performed in a controlled laboratory condition through jaw and Impact Crushers. The aggregates attained were characterized, demonstrating similar density, porosity, particle size distribution and content of attached cement paste. Minor observed differences do not justify the common belief in the industry that Impact Crushers provide an improvement in the quality of recycled aggregates due to the higher detachment of cement paste from aggregates.
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production of recycled sand from construction and demolition waste
Construction and Building Materials, 2013Co-Authors: Carina Ulsen, Henrique Kahn, G Hawlitschek, Eldon Azevedo Masini, Sergio Cirelli Angulo, Vanderley Moacyr JohnAbstract:Existing construction waste recycling technologies and standards have long been applied in construction and demolition waste recycling. However, they have been essentially focused on the production and use of coarse recycled aggregates. This paper presents a technology that permits the production of high quality recycled sand. The selective removal with a vertical Impact Crusher of the cement paste attached to recycled aggregates and the potential improvements in the quality of the recycled sand that is produced were investigated. The results showed that the proposed method permitted the production of low-porosity sand from construction and demolition waste and may contributes to changing the construction recycling model.
