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690results about How to "Efficient sorting" patented technology

System for sorting blocky solid construction waste on basis of multiple detection modes

The invention discloses a system for sorting blocky solid construction waste on the basis of multiple detection modes. The system is provided with one or more sorting units. Each sorting unit comprises a detection and recognition part, a jet part, a sorting part and a real-time detection and control system. Each detection and recognition part is provided with a sensor array and a conveying belt. Each sensor array comprises various sensor components located above and below the corresponding conveying belt. Each real-time detection and control system is used for achieving signal processing of the corresponding sensor array and controlling the corresponding conveying belt and high-pressure air pumps of the corresponding jet part. By judging object physical and chemical properties obtained after signal processing, the construction waste is selectively jetted into different sorting boxes through high-pressure air guns. The construction waste which is subjected to mechanical sorting (involving primary smashing and screening) and has the similar density is differentiated through spectroscopy and a plurality of other physical and chemical characteristic parameters, in this way, sorting of the solid construction waste is achieved. The system has high analytical precision, cost performance and efficiency and is easy to maintain.
Owner:QUANZHOU INST OF EQUIP MFG

Classified-desliming pressurized-feeding three-product dense medium cyclone coal preparation process

Provided is a classified-desliming pressurized-feeding three-product dense medium cyclone coal preparation process. The process comprises the steps that wet classification and primary desliming are carried out on raw coal after prescreening, gangue predischarging and breaking are carried out on the raw coal, secondary desliming is carried out on the screen underflow of the raw coal after the screen underflow is concentrated, the oversize products of the secondary desliming and the screen underflow of the primary desliming are together fed in a pressurized three-product cyclone, three products are obtained after separation, and clean coal, middle coal and gangue are obtained after medium separation and dehydration are carried out on the three products. Part of qualified suspension liquid and dilute suspension liquid are obtained when the medium separation is carried out on the three products, magnetic concentrate is obtained after the dilute suspension liquid is recovered by a magnetic separator, and the magnetic concentrate and the qualified suspension liquid are directly fed in a medium blending barrel. The magnetic tailings of the dilute suspension liquid and the undersize mixtures of pre-desliming, the overflow of concentration classifying equipment and a secondary desliming screen enter a coal slime recovery processing system together. The process is high in separation efficiency, flexible in product structure, low in producing and operating cost and prone to achieving the large-scale single system, the modularization and the integrating intellectualization of plant layout.
Owner:煤炭科学研究总院唐山研究院

Beneficiation method for complex sulphide lead-zinc ore containing arsenic

ActiveCN105251620AAvoid heavy pollutionReduce lime usageFlotationLead zincBeneficiation
The invention discloses a beneficiation method for complex sulphide lead-zinc ore containing arsenic. The beneficiation method is characterized by comprising the steps that raw ore is added into a ball mill to be milled, lime, zinc sulfate, sodium sulfite and p-xylylenebis(n,n- diethyldithiocarbamate) are added after the milled raw ore enters a first stirring tank, and diethyldithiocarbamate, isoamylxanthate and terpenic oil are added into a second stirring tank; a combined inhibitor and a combined collector are added before first-time scavenging and second-time scavenging of lead floatation; the combined inhibitor and the combined collector are added before first-time lead concentration, second-time lead concentration and third-time lead concentration; zinc floatation is conducted on tailings obtained after lead floatation; the combined inhibitor and the combined collector are added before first-time scavenging and second-time scavenging of zinc floatation; and lime is added before each time zinc concentration is conducted. By the adoption of the beneficiation method, lead-zinc concentrate products qualified in arsenic content are obtained, the grade and yield of lead and zinc in lead concentrate can be increased, and the grade and yield of zinc in zinc concentrate can also be increased; highly toxic products such as sodium cyanide or oxidizing agents do not need to be added, serious pollution to the environment is avoided, and clean, environment-friendly and safe production is achieved.
Owner:SHENYANG RES INST OF NONFERROUS METALS

Wide-grain-grade double-dense-medium process for separating all coarse coal slime

The invention discloses a wide-grain-grade double-dense-medium process for separating all coarse coal slime. The wide-grain-grade double-dense-medium process includes that raw coal is preliminarily sieved, manually picked and graded, then oversize products can be used as coarse grain coal, the coarse grain coal is fed into a non-pressure tri-product dense-medium cyclone to be separated, undersize products are concentrated and graded and then are dehydrated in an underflow manner to be used as fine grain coal, the fine grain coal is fed into a pressure tri-product dense-medium cyclone to be separated, and excess flow is fed into a flotation filter-press system, so that the coal slime can be separated; qualified suspension liquid of a fine grain coal dense-medium separating system is provided by coarse grain clean coal of a coarse grain coal separating system, lower branches of coarse grain middling coal primary-section medium removing equipment and branches of coarse grain clean coal and coarse grain middling coal magnetic separation concentration; dilute suspension liquid of coarse grain gangue products and dilute suspension liquid of middling coal and gangue products of a fine grain coal system are treated together; magnetic separation tailings are used as wetting water or primary spray water for grading screens. The wide-grain-grade double-dense-medium process has the advantages that the fine grain coal dense-medium system has a medium automatic generating function, all the coarse coal slime can be efficiently separated by dense media, the suspension liquid is circulated in a closed-loop manner, the separation efficiency is high, the products are flexible in structure, and the production and operation costs are low.
Owner:TANGSHAN BRANCH COAL SCI ACAD

Method for arranging steering buses in sequence in bus stop at inner side of road

The invention discloses a method for arranging steering buses in sequence in a bus stop at the inner side of a road. The method comprises the steps that according to collected bus real-time information, time when one bus reaches a downstream intersection is predicted, passenger delay caused by steering and a signal phase sequence of the bus is analyzed, so that an optimal scheme of the bus sequence is generated, a driving waiting zone and a signal control light are arranged at the bus stop at the inner side of the road, and therefore the bus operation sequence is effectively adjusted. According to the method for arranging the steering buses in sequence in the bus stop at the inner side of the road, from the perspective of bus operation time and with the combination of bus operation experience data and real-time collected data, the time when one bus reaches the downstream intersection is accurately predicted, passenger delay caused by the driving sequence of the steering buses is accurately judged according to an original green light interval time table, and the reliable steering bus sequence is formed; the driving waiting zone is arranged at the bus stop, so that under the condition of linkage control of an outlet portion and the signal light of the driving waiting zone, the buses are rapidly and effectively lined, total delay of the steering buses in the intersection is reduced, prior passage of the buses at the signal intersection of the downstream is guaranteed, and the operation efficiency of the buses is effectively improved.
Owner:SOUTHEAST UNIV

Potato grading control method and device based on machine vision technology

The invention discloses a potato grading control method and device based on machine vision technology. The method is characterized in that during image detection, a camera field-of-view is divided into virtual passages with the number corresponding to that of guiding lifting levers according to the number of the guiding lifting levers; a logic value is used for indicating whether to-be-graded potatoes exist on each virtual passage or not; a control and processing unit controls the guiding lifting levers to act according to the detected logic value, and when the logic value is equal to 1, a guiding mechanism corresponding to the guiding lifting levers is upward pushed out by an air cylinder, and potatoes are in contact with the guiding lifting levers, so that the running track of the potatoes is changed, and the potatoes are separated to be thrown into corresponding discharging chutes; and after a camera is used for acquiring images of the potatoes, a virtual circle is drawn by taking the transverse diameters of the potatoes as the diameter according to the image detection result, and whether one or more guide lifting levers are adopted for separating the potatoes is determined according to the areas, occupied by the virtual circle, of the virtual passages. The fast detection of potatoes with various and different quality can be realized, damage to the potatoes can be reduced, and the sorting of the potatoes can be precisely realized.
Owner:ZHEJIANG UNIV
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