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leaching temperature     
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  浸出温度
     The results indicate that the optimum technological conditions are as follows:the particle size of mineral is 0.149mm,the leaching temperature is 323K,the concentration of leaching agent is 10%,and the proportion of liquid to solid is 10∶1 .
     结果表明,该过程的优化工艺条件为:矿样粒度为0.149mm、浸出温度为323K、溶浸剂浓度为10%、液固比为10∶1。
短句来源
     for hydrochloric acid is acid concentration 10%, leaching temperature 70℃, retention time 8h, and ratio of solid to liquid 1∶5, salt addition 5%;
     最佳浸出条件 :对硫酸体系是酸浓度 2 0 % ,浸出温度 70℃ ,浸出时间 8h ,固液比 1:5 ; 对盐酸体系是酸浓度 10 % ,浸出温度 70℃ ,浸出时间 8h ,固液比 1:5 ,氯化钠加入量 5 % ;
短句来源
     Tests results show that the leaching rate of copper obtained was over 98% under the following conditions with initial concentration of ammonium persulfate 0.50 mol/L, leaching temperature of 368k, with leaching time of 100min, particle size of chalcopyrite within -74+58μm, concentration of silver ions of 0.001 mol/L, stirring speed up to 600 r/min and pulp density of 25 g/L.
     试验结果表明,在过硫酸铵初始浓度0.50mol/L、黄铜矿粒度-74+58μm、浸出温度368K、浸出时间100min、搅拌转速600r/min和矿浆密度25g/L的浸出条件下,铜的浸出率可达到98.00%以上。
短句来源
     On leaching conditions as follows pyrolusite∶pyrite∶sulfuric acid ratio is 1∶0 3∶0 45, the leaching temperature 96℃, leaching time 7 h, the solid liqud ratio is 1∶5, leaching Mn percentage of 97 00%.
     当浸出条件为软锰矿∶黄铁矿∶硫酸为 1∶0 3∶0 4 5 ,浸出温度为 96℃ ,浸出时间 7h ,固液比 1∶5时 ,锰的浸出率可达 97 0 0 %。
短句来源
     The results indicate that,when the particle size is less than 75 μm,the stirring rate more than 200 r/min and the amount of activating reagent 1.5% and these factors are taken as invariable factors, the optimum technological conditions are as follows:the leaching temperature 100 ℃,the leaching time 3 h, the concentration of sulfuric acid 45%,and the proportion of liquid to solid 4.0∶1.
     结果表明 :当以矿粒粒径 <75μm、搅拌速率 >2 0 0 r/min、活化剂 FS-1加入量为 1.5 %为固定因素时 ,其优化工艺条件为 :浸出温度 10 0℃ ,浸出时间 3h,硫酸质量浓度为 45 % ,液固比 4.0。
短句来源
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  浸取温度
     And the proposed leaching conditions are as follows: solid/liquid ratio of 1∶5,leaching temperature of 60 ℃,leaching time of 2 h,thiosulfate 0.4 mol/L,Cu~(2+) concentrations of 0.04 mol/L,ammonia concentrations of 0.45 mol/L,pH value of 9.5,SO_3~(2-) concentration of 0.2% and air flow rate of 1 L/min.
     合适的浸金条件是:固液比为1∶5,浸取温度60℃,反应时间2 h,硫代硫酸盐浓度0.4 mol/L,二价铜离子浓度0.04 mol/L,氨浓度0.45 mol/L,pH=9.5,添加0.2%的SO32-,空气进气速率1 L/m in。
短句来源
     The results of the test show that the optimum technological conditions for recovering molybdenum are the particle size of the spent catalysts 122 μm,roasting temperature 750 ℃,roasting time 2 h,leaching temperature 75 ℃,leaching time 4 h,the ratio of liquid and solid 6∶1.Under this operation condition,the recovering rate of molybdenum is over 93% and purity of sodium molybdate dihydrate over 95%.
     实验结果表明:回收钼的最佳工艺条件为,废催化剂颗粒度≤122μm、焙烧温度750℃、焙烧时间2 h、浸取温度75℃、浸取时间4 h、液固质量比6∶1。 在此条件下,钼的浸取率达到93%以上,产品钼酸钠的纯度达95%以上。
短句来源
     (2) The concentration of ammonia, leaching temperature and roasting temperature are important factors in NHb-leaching experiment.
     (2)氨浸实验中影响镉浸取的因素主要有:浸取液浓度、浸取温度和镍镉电池的焙烧条件。
短句来源
     the leaching temperature is 78~80℃;
     浸取温度70 ~ 80℃;
短句来源
     The results show that the better conditions of molybdenum leaching using alkai are as follows: catalyzer granularity(0.154?mm), baking temperature(750?℃), ratio of liquid and solid(3∶1), lixiviate time(4?h), leaching temperature(90?℃), and that the corresponding leaching rate reaches over 95%.
     结果表明,废催化剂粒度0.154mm,焙烧温度750℃,焙烧时间2h,液固比3∶1,浸取时间4h,浸取温度90℃为碱浸取回收Mo较佳条件,浸取率达95%以上;
短句来源
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  浸温度
     the leaching temperature of 100-110℃and the leaching time 90 ? 120min.
     酸浸温度100~110℃,酸浸时间90~120min.
短句来源
     It could be find that:① The optimum technological conditions of acid-leaching:leaching temperature was 80℃ ,ratio of liquid to solid was 5 to 1,leaching PH was 2,and leaching time was 4 hours. According to the technological condition of leaching manganese,leaching rate for manganese was 98.3%.
     通过试验研究可知:①在酸浸工艺中的最佳条件:酸浸温度80℃,反应体系的液固比为5:1,pH值为2,酸浸时间为4h下,锰的浸出效果最好,为98.3%。
短句来源
     The optimum conditions for the first step are as follows:the calcining temperature of bauxite 650 ℃,calcining time 1 h,the acid leaching temperature 85~90 ℃,HCl concentration 20%,and leaching time 2 h.
     考察了制备聚合氯化铝的各种影响因素,确定了一段溶出的最佳条件:铝土矿焙烧温度650℃,焙烧时间1 h,酸浸温度85~95℃,盐酸质量分数20%,酸浸时间2 h;
短句来源
     Based on the theoretic and experimental investigations on the acid leaching procedure,the effects of various factors on the manganese leaching rate in the leaching are discussed in detail. The optimum leaching conditions are ob- tained:the leaching temperature is 80℃. The liquid-solid ratio of the reaction system is 5:1.The pH value is 2 and the leaching time is 4h.
     采用酸浸贫菱锰矿石制取硫酸锰的工艺,通过对酸浸过程的理论与试验研究,详细讨论了酸浸各因素对锰浸出率的影响,得出了最佳的浸出工艺条件:酸浸温度80℃,反应体系的液固比为5:1,pH 值为2,酸浸时间为4h。
短句来源
     The optimum conditions for acidic leaching were found through study on deposit particle size, leaching temperature, hydrochloric acid concentration and agitation speed.
     通过对沉积物的粒度、酸浸温度、盐酸浓度、搅拌速度等因素的研究,找到了酸浸的优化条件。
短句来源
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  浸提温度
     the leaching temperature was 55℃;
     浸提温度为55℃;
短句来源
     This paper use bamboo leaves as the research object ,to the traditional alcohol extraction, made the extracting agent, leaching time, the compare of liquid and solid, leaching temperature been the mostly complication in this paper, and pretended the experiment likeL9(34).
     本文是以竹叶黄酮为研究对象,根据技术成熟的乙醇回流提取法,以浸提剂、固液比、浸提温度及浸提时间为主要考察因素,通过作L_9(3~4)正交实验;
短句来源
     leaching time? the compare of liquid and solid? leaching temperature been the mostly complication, and pretended the experiment like L9(34).
     实验表明:以浸提剂、固液比、浸提温度、浸提时间为主要考察因素,作L9(34)正交实验;
短句来源
     This paper introduced the extracting principle of soybean protein, analyzed the effects of crashing mode of bean dregs, leaching temperature, leaching time, pH value of leaching liquor and centrifugal separation process on the extracting result in the process of extracting soybean protein with alkali - extraction and acid - precipitation method, which provided basis for commercial production of soybean protein/polyacrylonitrile fiber.
     阐述了大豆蛋白质的分离原理,分析了运用“碱提酸沉”分离法提取大豆蛋白质过程中,豆粕的粉碎方式、浸提温度、浸提时间、浸提液的pH值以及离心工艺对提取效果的影响,为大豆蛋白/聚丙烯腈纤维的工业化生产提供了依据。
短句来源

 

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  leaching temperature
It was found that the smaller the feed-particle size or the higher the leaching temperature, the faster the leaching proceeds, as anticipated.
      
An empirical equation relating the manganese leaching rate constant with feed-particle size and leaching temperature was established.
      
An improvement in the dewatering characteristics of the leach residues was observed as the leaching temperature was increased.
      
Moreover, it was determined by chemical analysis that as the leaching temperature increased, the concentrations of Ni and Co progressively increased in solution, whereas the impurities (Fe and Al) rose through a maximum and then decreased.
      
The effect of CO2 and its interaction with other leaching factors, such as liquid/solid (L/S) ratio, leaching time, pH, ultrasound treatment, and leaching temperature, were examined using a reduced 26-1 experimental design.
      
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Sea-sand distributed along the coast of southern Fujien is found to contain monatize and also together with titania, ferro-titania, zirconia etc. Constituents of rare earths which ivolved in the fine monatize obtained by flotation are mainly phosphates of cerium group as thier spectrogram shown.Process of usual preliminary decomposition of monatize in rare earths production is now adopted either by means of an acid treatment with concentrated sulfuric acid, or a base treatment with concentrated caustic soda...

Sea-sand distributed along the coast of southern Fujien is found to contain monatize and also together with titania, ferro-titania, zirconia etc. Constituents of rare earths which ivolved in the fine monatize obtained by flotation are mainly phosphates of cerium group as thier spectrogram shown.Process of usual preliminary decomposition of monatize in rare earths production is now adopted either by means of an acid treatment with concentrated sulfuric acid, or a base treatment with concentrated caustic soda solution. As for the bustnasite, it had been reproted while the mineral is ignited with soda as a cracking agent, the recovery rates of rare earth oxides and thoria from the mineral are similar to that from monatize by acid or base process mentioned above. They are all over 95%.In this paper, the authors deal with the soda process for decomposing monatize from Fujien at first, but fail to obtain a fair result. The recovery rates fo rare earth oxides and thoria are less than 30%. However, by adding fluorite as a flux with soda to the powderized ore in ignition, it is predominantly to promote the efficiency for leaching out the oxides from ignited mixtures by acid extraction.Optimun conditions of the procedure mentioned above are: (I) proportion of soda and fluorite to mineral by weight is 75% and 10-12% respectively, (2) ignition temperature-650℃, ignition time-1.5 hours, (3) acid leaching time-1.5 hours, leaching temperature-70-80℃, (4) concentration of acid (H_2SO_4 or HCl)-4N. The recovery rates of these oxides by sulfuric acid extraction or by hydrochloric acid extraction are greater than 95% or 98% respectively.Stock solution prepared in such way may be applied to production for preparing rare earths salts and thorium salts.

碳酸钠分解法处理含氟稀土精矿,稀土(钍)的浸出提取率与生产上常用的硫酸分解法或氢氧化钠分解法相同.用此法分解本省海滨砂矿的独居砂,稀土(钍)的浸出率低于30%.本文研究了以氟化钙作为独居砂的添加剂,模拟含氟稀土精矿的碳酸钠分解法进行了独居矿的分解试验.用稀硫酸或稀盐酸为浸出用酸,稀土(钍)的浸出率分别达95%和98%以上,浸出料液符合生产上的工艺条件要求.

The effects of leaching condition,such as ratio of liquid tosolid,temperature,chemical composition of leaching solution and pH on theliberation of Ra from uranium mill tailing samples and the distribution ofRa in the fine and coarse perticle tailings are investigated.It is found thatthe Ra content in the fine particle tailing is higier than that in the coarseone.The amount of Ra liberated from tailing may increase as the ratio ofliquid to solid or leaching temperature is increased.The presence of somesalts...

The effects of leaching condition,such as ratio of liquid tosolid,temperature,chemical composition of leaching solution and pH on theliberation of Ra from uranium mill tailing samples and the distribution ofRa in the fine and coarse perticle tailings are investigated.It is found thatthe Ra content in the fine particle tailing is higier than that in the coarseone.The amount of Ra liberated from tailing may increase as the ratio ofliquid to solid or leaching temperature is increased.The presence of somesalts of alkali metals or alkali-earth metals,such as KCl,NaCl,CaCl_2,BaCl_2 or MgCl_2,promots the liberation of Ra from tailings.If Ba~(2+)andSO_4~(2-)are added into the solution simultaneously,the concentration of Ra inthe solution will significantly reduce owing to the formation of coprecipitateof Ba(Ra)SO_4.The effect of solution pH on Ra liberation is significant.The concentration of Ra in the solution is gradually reduced with increasingthe solution pH from 1 to 7—9 and raised again at pH 13.The minimumconcentration of Ra is appeared at pH 7—9.

本工作以某矿铀浸出后的尾渣为原料,观察了镭在粗细尾渣中的分布,研究了液固比、温度、溶液中化学组成和 pH 等因素对铀矿尾渣中镭释出的影响。试验发现:细渣中镭含量较粗渣中高,在本试验的条件下,增加液固比、提高温度都能使镭释出量有所增加;某些碱金属和碱土金属的氯化物如氯化钾、氯化钠、氯化钙、氯化钡和氯化镁溶液能促使镭从尾渣中释出;如果溶液中同时加入钡和硫酸根离子,则由于硫酸钡镭的同晶共沉淀现象而使溶液中的镭浓度大大降低。溶液 pH对镭的释出有明显的影响,当 pH 由1升至7—9时,溶液中镭浓度逐渐下降并出现最低值,pH 继续升至13则溶液中的镭浓度又增加。

The writers have made a test of Leaching the Qianzhong bauxite according to a scheme of three-factor quadratic regressive cross design. The result of test having been processed, a model is obtained, Which represents the relation between the leaching rate of alamina (η_A%) and the leaching temperature (C,X), the concentration of caustic alkali (g/1,x_2)and the amount of lime added(%,x_1)。 η_A=817.7+13.48X_1-0.485X_2-6.484X_3-4.673×10~(-3)X_1X_2-3.551×10~(-2)X_1X_3-2.739×10~(-4)X_2X_3-0.1839X_1~2+1.491×10~(-3)X_2~2+1.479×10~(-2)X_3~2...

The writers have made a test of Leaching the Qianzhong bauxite according to a scheme of three-factor quadratic regressive cross design. The result of test having been processed, a model is obtained, Which represents the relation between the leaching rate of alamina (η_A%) and the leaching temperature (C,X), the concentration of caustic alkali (g/1,x_2)and the amount of lime added(%,x_1)。 η_A=817.7+13.48X_1-0.485X_2-6.484X_3-4.673×10~(-3)X_1X_2-3.551×10~(-2)X_1X_3-2.739×10~(-4)X_2X_3-0.1839X_1~2+1.491×10~(-3)X_2~2+1.479×10~(-2)X_3~2 The model being used to guide production, more advantageous and reasonable conditions of leaching under high pressure may be found. When other Conditions remain constant, the amount of lime added has an optimum value, and it Will decrease with the increase of the 1eaching temperature, While the value of η_A will increase at the Same time. But in production this value can not be exceeded too much, otherwise the technical and economic indexes will deteriorate. The interaction between the amount of lime added and the leaching tempera-ture Should not be neglected. The Guigong catalyst NO.1 can increase the value of η_A by 6.6~11.2%. It is an efficacious additive.

用三因子二次回归正交设计方案,对黔中铝土矿进行溶出试验。实验结果经处理后得到氧化铝的溶出率(η_A,%)与溶出温度(℃,X_3)、苛性碱浓度(g/L,X_2)和石灰添加量(%,X_1)相互关系的数学模型: η_A=817.7+13.48X_1-0.485X_2-6.484X_3-4.673×10~(-3)X_1X_2-3.551×10~(-2)X_1X_3-2.739×10~(-4)X_2X_3-0.1839X_1~2+1.491×10~(-3)X_2~2+1.479×10~(-2)X_3~2利用该数学模型可以指导生产,寻找更经济合理的高压溶条件。在其它溶出条件一定时,石灰添加量有一最佳值,该值随温度的升高而减小,ηA值却增大。但生产上不宜超过这一最佳值太多,否则会使技术经济指标恶化。本实验发现石灰的添加量与溶出温度的交互作用是不容忽视的。贵工1~#催化添加剂,能使η_A提高6.6~11.2%。这是一个很有使用价值的添加剂。

 
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