• Title, Summary, Keyword: pelletizing

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Seed Pelletizing of Salvia splendens and Calendula officinalis for the Greening and Re-vegetating (녹화와 식생조성을 위한 샐비어와 금잔화 종자의 펠렛처리)

  • Kim, Seung-Hyun;Lee, Byoung-Ryong;Choi, Byoung-Kon
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.10 no.5
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    • pp.67-75
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    • 2007
  • The purpose of this study was to pelletize to calendula and salvia seeds with peat moss as basic material for the efficient greening and vegetating of slopes and damaged areas. Also the pelletizing was compressed by spherical types that mixed basic fertilizer of N.;300 mg/l, P.;200 mg/l, K.;400 mg/g and plant growth regulator of A and NAA each 300PPM. Soil and soil surface seeding methods were researched to find the growing state of germination percent, germination date, germination force, length of leaf, number of leaf, width of leaf, length of plant, and etc. Comparing with controlled pelletizing, peat moss and +GA pelletizing treatments resulted in higher from two to three times as following growing states : length of leaves, number of leaves, width of leaves, length of plants, length of roots, fresh weights, and ratio of germination. Especially the two treatments above showed four more times effects than the +NNA treatment. Also their germinating date germinating force were earlier and stronger. The surface seeding method was superior to soil seeding.

Study on the Estimation of Proper Compression Ratios for Korean Domestic Wood Species by Single Pellet Press

  • LEE, Hyoung-Woo;KIM, Soon-Bae
    • Journal of the Korean Wood Science and Technology
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    • v.48 no.4
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    • pp.450-457
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    • 2020
  • Single pellet press technology allows for fast, low-cost, and small-scale tests to investigate pelletizing characteristics. We estimated proper compression ratios for five Korean domestic wood species through predicted relationships between pelletizing pressure Px and compression ratio based on experimental data obtained from a single pellet press unit. The pressures required to obtain a 6-mm-diam pellet of density 1200 kg/㎥ were estimated as 111 MPa for Populus davidiana, 133 MPa for Robinia pseudoacacia, 136 MPa for Quercus mongolica, 97 MPa for Pinus densiflora, and 127 MPa for Pinus rigida. On the basis of these pressures, we estimated proper compression ratios to be within the range 7.676-8.410 for these species, and we found the compression ratios needed for hardwood species to be somewhat higher than those needed for softwood species to obtain the pellet density of 1200 kg/㎥.

Physicochemical Characteristics of Fermented Pig Manure Compost and Cow Manure Compost by Pelletizing (펠렛 가공처리에 따른 돈분 발효퇴비와 우분 발효퇴비의 물리화학적 특성)

  • Jeong, Kwang Hwa;Park, Chi Ho;Choi, Dong Yun;Kwak, Jung Hoon;Yang, Chang Bum;Kang, Ho
    • Journal of the Korea Organic Resources Recycling Association
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    • v.13 no.4
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    • pp.118-127
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    • 2005
  • The best way to treat livestock manure is a recycling the manure to arable land as an organic fertilizer. In this study, fermented cow manure compost and pig manure compost were used as a raw materials for pelletizing. The changes of physicochemical properties of each composts and pellets were investigated. The aim of this research was to improve availability of livestock manure compost. In pelletizing process of fermented livestock manure compost, the optimal water content to make pellet was around 40%. When clay was mixed by volume more than 15% as a bonding agent, the condition of pelletizing process was beginning to improve. On a dry matter basis, the contents of N, P and K of fermented pig manure compost were 2.05%, 1.89% and 1.31%, respectively. After pelletizing, the contents of compost pelleted with the pig manure compost were 1.96% 1.73% and 0.89%, respectively. The same parameters of cow manure compost were 2.52%, 1.01% and 2.98%, respectively. After processing, the contents of compost pelleted with the cow manure compost were 2.45%, 1.10% and 2.93%, respectively. After pelletizing, there were little change in the content of heavy metals such as Pb, Cd, As and Hg. When pelleted compost dried naturally was submerged in water, it was completely dissolved in 30 minutes. On the other hand, Pelleted compost dried with the mechanical convection oven set $70^{\circ}C$ for 24 hours was completely dissolved in 960 minutes. The volume and weight of pelleted compost were decreased with time. After 30 days of storing, the weight of pelleted compost was decreased by 15% compared with its original weight. The volume of it was decreased by 17~25% in the same time.

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Wood pelletizing using pine root waste biomass - different pelletizing properties between trunk and root biomass of Pinus densiflora (소나무 뿌리 폐기물을 이용한 목질 펠릿 제조 - 목부와 뿌리로 제조한 펠릿의 특성 비교)

  • Shin, Soo-Jeong;Han, Gyu-Seong;Myeong, Soo-Jeong;Cho, Jung-Sik;Yeon, Ik-Jun
    • 한국신재생에너지학회:학술대회논문집
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    • pp.71-73
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    • 2008
  • Different biosolid fuel (wood pellet) properties between trunk and root of pine (Pinus densiflora) biomass were investigated. Trunk has more organic solvent extracts and Klason lignin content which has higher heating values than root biomass component. In root biomass, polysaccharides content was higher than trunk biomass. Based on Higher Heating Value (HHD) analysis and ash content, trunk biomass showed better solid fuel characteristics than root biomass. But pine root biomass had lower HHD than trunk biomass, its HHD values were higher than other hardwood or annual plant lignocellulosic biomass.

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A Study on the Pelletized Batch for $Na_2O-BaO-SiO_2$ System Glass ($Na_2O-BaO-SiO_2$ 계 유리조합물의 조립화에 관한 연구)

  • 박영원;강원호
    • Journal of the Korean Ceramic Society
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    • v.20 no.2
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    • pp.147-152
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    • 1983
  • For $Na_2O-BaO-SiO_2$ system glass the pelletizing conditions of the disk type equipment were investigated. The effects of the pelletized batch on melting were also examined. Through the experiment the optimum conditions for pelletizing the batch were found as follows. Revolving speed of the pan 30rpm pan angle 40-35 degree Water content 12-13% Drying temperature $200^{\circ}C$ Preheating temperature $650^{\circ}C$ The molten glass of the pelletized batch was refined better than that of the loose batch.

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Development of a Pelletizing System of Fermented TMR for Pig Feeding

  • Cha, Jaeyoon;Ali, Mohammod;Hong, Young Sin;Yu, Byeong Kee;Lee, Sunghyun;Seonwoo, Hoon;Kim, Hyuck Joo
    • Journal of Biosystems Engineering
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    • v.43 no.2
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    • pp.119-127
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    • 2018
  • Purpose: Fermented feedstuffs have been found to improve productivity, reduce manure odor, and increase immunity. However, because there is not a commercialized pelletizing system for fermented total mixed ration (TMR) for pig feeding in Korea, a pelletizing system using TMR fermented feed was developed. Methods: The particle size, density, and volumetric density of the TMR feeds used in the test were measured. The pellet durability index (PDI, %) value of the pelletized TMR feed based on its moisture content, and the amount of pellet production based on the rotation speed of the compression roller were measured. Results: The test materials, TMR1 and TMR2, were approximately compressed to 387 kg/m3 with 18.2% (w.b.) and 544 kg/m3 with 22.2% (w.b.), respectively. Throughout this pellet molding test, the moisture content from 15 to 20% (w.b.) of mixture feedstuffs, including fermented forage, could be used for pellet molding. Based on the results, a small-scale pellet molding system of fermented TMR was designed and manufactured for pig farms. As rotation speed increased, the throughput increased, whereas the moisture content decreased by approximately 2% (w.b.) because of pellet molding. The best yield of pellets with 94.2% PDI was of 536 kg/h at 135 rpm rotation speed. Conclusions: Although the throughput of the prototype increased as the rotation speed increased, it was difficult to operate because of the greater noise and the lower PDI (%) at the higher rotation speed of the pellet molding rotor. It was found that the best production of pellets using the prototype was 536 kg/h having a PDI of 94.2% or more at a rotation speed of 135 rpm.

Analyses of Physical Properties of Copper-contained Sludge Pelletized for Applied Pyro-metallurgical Process (건식제련용 동 함유 슬러지 펠렛 제조 및 물리적 특성평가)

  • Kim, Suyun;Kim, Youngjin;Kim, Seunghyun;Lee, Jaeryeong
    • Resources Recycling
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    • v.28 no.2
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    • pp.31-39
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    • 2019
  • The pelletizing of printed circuit board (PCB) sludge was researched for copper recovery in pyrometallurgical process. This pelletizing was carried out by using self-manufactured compression-type apparatus after pre-treatments (drying, water scrubbing, size classification) were proceeded. The physical properties (compression strength and drop-breakage test) were tested with a change of sludge sizing and the number of compression. In the case of using the undersized sludge of #140, its properties were improved to 0.6 MPa and 9.3 times. Moreover, they increased to 0.82 MPa and 19.0 times by using the #140 ~ 325 sludge. These imply that the packing density increases due to the elimination of large-sized sludge (#140), and also the weight of required binder decreases by the removal of fine-sized sludge (#325).

Production of High-density Solid Fuel Using Torrefeid Biomass of Larch Wood (낙엽송 반탄화 바이오매스를 이용한 고밀도 고형연료 생산)

  • Song, Dae-Yeon;Ahn, Byoung-Jun;Gong, Sung-Ho;Lee, Jae-Jung;Lee, Hyoung-Woo;Lee, Jae-Won
    • Journal of the Korean Wood Science and Technology
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    • v.43 no.3
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    • pp.381-389
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    • 2015
  • In this study, the effects of moisture content and particles size of ground particles of torrefied larch chips on the pelletizing process were investigated depending on torrefaction conditions ($220^{\circ}C$-50 min, $250^{\circ}C$-50 min, $250^{\circ}C$-120 min). The moisture content in the torrefied chip decreased to 0.69~1.75%, while ash content and calorific value increased compared to untreated chip. In addition, weight loss significantly increased during torrefaction due to hemicellulose degradation. The carbon content in torrefied larch chip increased compare to untreated larch chip, while the hydrogen and oxygen contents decreased. The lignin and glucan contents in torrefied larch chip increased with increasing severity of the torrefaction condition, while hemicellulose decreased. In the particle size distribution of ground particles of torrefied larch chip, larch torrefied at severe conditions was found to produce smaller particles (~1 mm) than that of the larch torrefied at mild conditions. Macropore (over $500{\AA}$) in the torrefied particle was produced during torrefaction. During the pelletizing using ground particles of torrefied larch chip, the pressure needed in pelletizing decreased and pellet length increased with increasing moisture content, regardless of the particle size.

Quality and Combustion Characteristics of Miscanthus Pellet for Bioenergy (바이오에너지용 억새 펠릿의 품질 및 연소 특성)

  • Moon, Youn-Ho;Lee, Ji-Eun;Yu, Gyeong-Dan;Cha, Young-Lok;Song, Yeon-Sang;Lee, Kyeong-Bo
    • Clean Technology
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    • v.22 no.4
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    • pp.286-291
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    • 2016
  • In this study we made fuel pellet from miscanthus biomass and investigated changes of physiological characteristics and electricity consumption of pelletizing process in comparison with fuel pellet made of pine sawdust. We also examined combustion characteristics including ash content and clinker forming ratio with fuel pellet made of mixing with micanthus biomass and lime powder. Bulk density of ground-miscanthus and pine sawdust were $158g\;L^{-1}$ and $187g\;L^{-1}$, respectively. Bulk density of ground miscanthus was lower than that of pine sawdust, but increased to $653g\;L^{-1}$ after pelletizing, which was similar to $656g\;L^{-1}$ of pine sawdust pellet. Moisture content in raw miscanthus and ground miscanthus were 17.0% and 11.8%, respectively. Moisture content in ground miscanthus was similar to that of pine saw dust and decreased to 6.73% after pelletizing, which was 7.7% lower than that of pine sawdust pellet. Although $27kWh\;ton^{-1}$ were required for compaction press that was an additional process in miscanthus pelleitizing, total required electricity was $193kWh\;ton^{-1}$ which was similar to $195kWh\;ton^{-1}$ of pine sawdust pellet pelleitizing. Pellet durability and pelletizing ratio of miscanthus were 98.0% and 99.7%, respectively, which were similar to 98.1% and 99.4% of pine sawdust pellet. When lime mixing ratio increased, ash melting degree and clinker forming ratio of miscanthus pellet increased. While higher heating value and clinker forming ratio of miscanthus pellet decreased.

Influence of Blast Furnace Slag Addition on the Strength of Cold Bonded Pellet (고로 급냉슬래그를 첨가한 비소성 펠릿의 강도거동)

  • 피용진;반봉찬;김태동
    • Resources Recycling
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    • v.8 no.1
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    • pp.29-36
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    • 1999
  • Utilization of iron bearing dusts has been needed agglomeration prior to use as a burden in blast furnace The cold bonded pellet process using iron bearing dusts has been developed as an alternative to the conventional heat indurated pelletizing process. Partial substitution of cements with cheaper materials would decrease the production cost of pellet. This paper discusses the strength of pellet containing blast furnace slag as a bonding material in pelletizing a cold bonded agglomerates. Depending upon the quality, half of the cement required may be replaced by slag in the pellets with a strength of around 150 kgf. Some of the physicochemical properties of the bonding materials are also investigated in the present work.

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