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双语推荐:粉碎粒度

采用温浸法研究不同粉碎粒度对黄芪多糖提取率的影响,实验结果表明:粉碎粒度80目时粗多糖提取率为16.29%,粗多糖纯度为61.67%;45目时提取率为9.90%,粗多糖纯度为53.33%;30目时提取率为5.76%,粗多糖纯度为48.40%,多糖提取率和粗多糖的纯度随着粉碎粒度的减小显著增大,这些数据为黄芪多糖开发提供了重要依据。
The research aims to study the influence to extraction rate of astragalus polysaccharide at differ‐ent grinding particle size by Ultrasonic treatment. The results of the experiment show that the polysaccha‐ride extraction rate is 16. 29% and the purity is 61. 67% when the grinding particle size is 80 mesh. The polysaccharide extraction rate is 9. 90% and the purity is 53. 33% when the grinding particle size is 45 mesh. The polysaccharide extraction rate is 5. 76% and the purity is 48. 40% when the grinding particle size is 30 mesh. The extraction rate of astragalus polysaccharide and the purity are in significant increase with the decrease of grinding particle size. These data are the important basis for the development of astragalus polysaccharide.

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用气流粉碎机对原料高氯酸铵( AP )进行粉碎,行星球磨机对粉碎后的AP 进行球磨,使其球形化。用扫描电镜、微米粒度测试仪、傅里叶红外光谱仪、分别对比了原料AP、粉碎后AP和超细球形AP的形貌、粒度分布和红外光谱。用标准容器法和差示扫描量热法( DSC)测试了同粒度超细球形AP和非球形AP的松装堆积密度和热性能。测试了同粒度超细球形AP和非球形AP的撞击感度和摩擦感度、吸湿性和结块性。结果表明,用球磨法制备的超细球形AP球形率高,球形度好,表面光滑,缺陷少,热分解温度向低温区移动。球形化后的AP撞击感度和摩擦感度降低,吸湿性和结块性明显改善。
Ammonium Perchlorate(AP) was smashed by jet mill,and then superfine spherical AP particles was prepared by planetary ball mill. Their morphologies,particle and IR spectra were characterized with scan electron microscope( SEM) ,Micron la-ser particle size analyzer and Fourier transform infrared spectrometer. Bulk density and thermal mechanical properties of superfine spherical AP and non spherical AP with the same size were characterized by standard container and differential scanning calorimeter (DSC).The impact sensitivity and friction sensitivity,hygroscopicity and caking of superfine spherical AP and non spherical AP with the same size were studied. The results show that superfine spherical AP prepared by the milling method has a high rate of sphe-roidization,good sphericity,smooth surface,fewer defects and thermal decomposition peak moves to low temperature. In addition, the impact sensitivity and friction sensitivity of superfine spherical AP are lower than the non-spherical AP,an

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运用超临界CO2萃取技术,从韭菜籽中萃取出韭菜籽油,研究韭菜籽粉碎粒度、萃取压力、萃取温度、萃取时间及CO2流量对萃取率的影响。结果表明,韭菜籽粉碎粒度为50~60目,萃取压力为22~25 MPa,萃取温度为45℃,萃取时间为2.5 h, CO2流量为3.0 L/h,该条件下萃取率达17%以上。
The seed oil of Allium tuberosum is extracted by supercritical CO2 fluid extraction, and the result shows that granule sizes 50~60 mesh, extraction pressure 22~25 MPa, extraction temperature 45℃, extraction time 2.5 h and CO2 flow rate on the production 3.0 L/h, after investigating the ifluences of above-mentioned three factors on oil yield, which reached above 17%under the feasible operating conditions.

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采用肉鸡常用的玉米和小麦型两种日粮,三个制粒温度梯度(80、85、90℃)进行了颗粒饲料质量比较研究。结果表明:制粒温度提高,可以提高颗粒饲料的PDI、MPDI、硬度和淀粉糊化度(P〈0.05),随着制粒温度的升高(80~90℃),无论是玉米型和小麦型日粮,均可以改善颗粒饲料的品质;从颗粒饲料质量比较,小麦型日粮优于玉米型日粮(P〈0.05)。采用4种不同的粉碎机筛片(1.0、1.5、2.0、2.5 mm),粉碎大宗原料(玉米、小麦、豆粕),获得4种几何平均粒径(378、430、516μm和590μm)的粉状饲料,研究粉碎粒度对颗粒饲料品质影响。结果表明:本研究条件下的粉碎粒度没有影响颗粒饲料的品质(P〉0.05)。研究结论:制粒温度的升高可以改善颗粒饲料的品质,尤其是小麦型日粮。粉碎粒度没有影响颗粒饲料的品质。
Two type of diets (maize and wheat based) in broilers and pelleting temperature (80, 85, 90℃) were selected to evaluate the effect on pellet quality. The result indicate:Temperature from 80 to 90 ℃ can improve PDI, hardness and gelatinised starch in both maize and wheat based diet (P 0.05). In summary, increasing the pelleting temperature can im-prove the pellets quality, especially in wheat-based diet. The particle size had no effect on the pellets quality.

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利用行星式球磨机对药用三七进行超微粉碎试验,就不同的球料比、转速、球磨时间对三七粉体粒径大小的影响进行了研究,并对粉碎前后粉末的粒度分布及微观形貌进行了表征.结果表明,球料比在m(研磨球)∶m(三七)=10∶1,转速500 r/min,时间90 min时得到的三七粉末粒度均匀,平均粒径11.992μm.电子显微镜观察到大片破裂细胞碎片,无大颗粒团块,表明单细胞充分破壁.
Experiment result of superfine pulverization of medicinal notoginseng by ball milling was investi -gated in this paper .The effects of different parameters such as ball material ratios , rotation speed and ball milling time on particle size of notoginseng powder were studied .The particle distribution and microscopic morphology were also examined .The results showed that the particle size of notoginseng was uniform and the average size was 11.992μm under the ball material ratio of 10 to 1, the rotation speed of 500 r/min and the milling time of 90 min.Large rupture of cellular debris and no clumps of particles could be ob-served , under electron microscope , which indicated that the single cells were fully broken .

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采用CJXXM型行星磨对D97≤45μm的煅烧黑滑石进行了超细粉碎实验,研究了粒度区间对超细粉碎动力学模型形式的影响以及磨机转速、介质粒度和助磨剂对动力学模型中破碎函数的影响。结果表明,对于D97≤45μm的原料,其适用于一阶动力学方程形式的粒度比为15.67;煅烧黑滑石破碎函数最大时所对应的转速为1200 r/min;介质粒度与破碎函数呈幂函数关系,其关系式为k=0.26843 d-0.14478;助磨剂的使用有益于提高破碎速率函数,液态助磨剂三乙醇胺和乙醇的效果优于固态助磨剂六偏磷酸钠。
This paper studies the impact of size interval, mill rotation, media size and grinding aids on the form of kinetic and the breakage function by ultraifne grinding calcined black talc ofD97≤45μm in a CJXXM planetary mill. The results show that for the minerals ofD97≤45μm, the suitable particle size ratio which can be applied in the form of the ifrst order kinetics is 15.67. The rotational speed corresponding to maximum breakage function of calcined black talc is 1200r/min. The breakage rate is the power function of media size, the form of the power function isk=0.26843d-0.14478. Grinding aids can improve the breakage rate function, and the liquid grinding aids like triethanolamine and ethanol have a better effect than solid state grinding aid such as hexametaphosphate.

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采用超微粉碎的方法处理甜荞麦麸皮,研究超微粉碎对甜荞麦麸皮持水力、持油力、膨胀力、可溶性膳食纤维、阳离子交换能力等性质影响,并比较不同粒度的超微麸皮粉性质的变化,结果表明,甜荞麦皮粉经超微粉碎之后,其持水力,膨胀力,可溶性膳食纤维含量和阳离子交换能力都有很大的提高,持油力略有提高,超微粉碎频率为20 Hz时制得的微粉C(粒径≤16.34μm)综合指标最佳。
Effectof superfine grindingon the water–holdingcapacity,oil–holdingcapacity,swelling capacity,soluble dietary fibercontent andcationic exchangecapacityof buckwheat bran were studied. The propertiesof buckwheat branof different particle sizes werecompared. Results showed that the water–holdingcapacity,swellingcapacity,cationic exchangecapacity and soluble dietary fiber contentof wheat bran were greatly improved,while theoil–holdingcapacity improved slightly. The comprehensive indexof powderC(diameter≤16.34μm) was the best and the frequencyof the superfine grinding was 20 Hz.

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为探讨济钢目前烧结原料结构条件下固体燃料粒度对烧结矿产质量的影响,通过改变固体燃料粒度中1 mm的比例进行烧结杯试验。结果表明,随着固体燃料粒度中1 mm比例的降低,垂直烧结速度加快,烧结矿成品率、利用系数、转鼓强度、平均粒径等指标明显改善,对降低固体燃料、烧结内返粉和高炉槽下返粉将起到重要作用。生产中应稳定四辊操作,适当放宽输出粒度范围,杜绝固体燃料的过粉碎现象。
A study is carried out on the influence of solid fuel particle size in sintering on sinter yield and quality by changing the proportion of<1 mm particle size solid fuel in sinter pot test. The results showed that when the<1 mm particle reduced, the vertical sintering rate increased, indexes such as sinter yield, utilization factor, tumbler strength and average particle size are remarkably improved, therefore greatly reducing solid fuel cost, return fines in sintering and under bin of BF. It also points out that the four roller operation should run smoothly, particle range should be properly widened and over powder phenomenon of solid fuel particle should be avoided.

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优选葛根煮散粉碎最佳粒度及煎煮最佳工艺。方法:制备三种不同粒度的煮散颗粒,采用HPLC法测定煮散水煎液中葛根素的含量,以浸出物、葛根素含量为指标优选最佳粒度,同时采用单因素实验进行煎煮时间、加水量、煎煮次数等工艺考察,优选最佳煎煮工艺,为临床合理使用煮散提供依据。结果:葛根煮散粒度优选为小于2 mm大于0.18 mm的颗粒在总颗粒中所占比例不得小于80%,最佳煎煮工艺为加20倍水,煎煮1次,煎煮20 min。结论:优选的煮散粉碎工艺简单,适合工业化;优选的煎煮工艺快速简便,适宜于临床使用。
Objective:To optimize the grinding and extracting process for Radix Pueraria Boiling Powder .Methods:Three different sizes of particles were prepared ,HPLC method was used for the determination of the content of Puerarin .Yield of dry extract and the content of puerarin were the referent indexes to select the optimum particle size ,and the decoction process was optimized by single factor test with boiling time,amount of water and boiling times as factors .Results:At least 80%of the particles having particle size between 2 and 0.18 mm was the optimum size .The optimal conditions of decoction process were 20-fold solvent,boiling 20 minutes,1 time.Conclusion:The optimized grinding process is easy and suitable in mass -production;the decoction process is user -friendly and suitable in clini-cal.

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试将粉碎后的炼焦煤料作为一个颗粒群,运用颗粒学的理论来分析炼焦入炉煤的粒度分布特征。根据颗粒学家T.Allen对分布宽度系数nk 的定义,设计试验方案采集基础数据;再应用计算机知识,处理基础数据,得到有关nk 的具体参数,并依据定义公式,计算得到几组炼焦入炉煤的粒度分布宽度系数nk。通过70kg小焦炉试验,研究了入炉煤粒度分布宽度系数对焦炭强度的影响,得到焦炭抗碎强度M40与入炉煤粒度分布宽度系数nk 的一元二次方程。这为研究入炉煤的粒度分布特征探索出一条行之有效的方法。
Coking coal after crushed was regarded as particles group, and characteristics of coal parti-cle size distribution were analyzed by the particle theory.According to the definition of distribution width coefficient nk by T.Allen, test scheme was designed and basic data were collected.Then basic data were processed through computer, the concrete parameters related to nk were obtained.On the ba-sis of definition formula, several groups distribution width coefficients nk were calculated.Influence of particle size distribution width coefficient of coal charged on coke strength was studied through the 70kg coke oven test.The effect of coal particle size distribution width coefficient on coke strength, an equa-tion of coke crushing strength M40 and particle size distribution width coefficient nk of coal charged were got, which provide an effective method for the study of characteristics of coal particle size distribution.

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