Study on Indium Leaching from Indium-Poor Zinc Residue Enhanced by Ultrasonic Treatment

2011 ◽  
Vol 201-203 ◽  
pp. 1770-1773
Author(s):  
Jin Huan Yao ◽  
Xuan Hai Li
Keyword(s):  
Ultrasonic Treatment ◽  
Design Method ◽  
Orthogonal Experiment ◽  
Leaching Rate ◽  
Optimum Conditions ◽  
Range Analysis ◽  
Orthogonal Experiment Design ◽  
Leaching Process ◽  
New Process ◽  
Hcl Solution

In this paper, orthogonal experiment design method was applied to determine the optimum condition for indium leaching from indium-poor zinc residue in HCl solution. Taking the results of range analysis and the situation of industrial production into consideration, the optimum conditions for conventional leaching are: reaction temperature 70°C, concentration of HCl 6 mol/L, leaching time 1.0 h, and ratio of liquid to solid 8:1. Under the optimum conditions, ultrasonic was used to enhance the leaching process. Compared with the conventional leaching process, this new process can provide better indium recovery, shorter leaching time, and faster leaching rate. The indium extraction of indium-poor zinc residue with ultrasonic treatment is up to 96 %, which is 31.0 % higher than that without ultrasonic treatment. In addition, the normal agitation improves the diffusion of solution in the ultrasonically enhanced leaching experiment.

Application of ANN in Preparing Technology of Magnesium Matrix Composites

2011 ◽  
Vol 216 ◽  
pp. 244-249
Author(s):  
Jian Xiong Ye ◽  
Fa Yun Zhang
Keyword(s):  
Traditional Method ◽  
Design Method ◽  
Orthogonal Experiment ◽  
Processing Parameters ◽  
Processing Temperature ◽  
Matrix Composites ◽  
Magnesium Matrix ◽  
Orthogonal Experiment Design ◽  
Magnesium Matrix Composites ◽  
Stirring Time

SiCp/AZ61 matrix composites were fabricated by stirring process in the paper. Different SiC volume fractions, processing temperature and stirring time have different influence on tensile strength and elongation of SiC; it is very difficult to find out the best processing parameters with traditional method. An effective method is demonstrated here: The orthogonal experiment design method is put into use at first, and then a satisfied ANN(Artificial Neural Network) is achieved by help of GA’s(Genetic Algorithm) global optimizing capacity. Experimental results proved the prediction accuracy and the adaptability of our work.

Orthogonal Experiment Study on the Hydrogen Desorption Properties of NaAlH4 and LiAlH4

1994 ◽  
Vol 115-116 ◽  
pp. 1-38 ◽  
Author(s):  
J. van Ek ◽  
A. Lodder
Keyword(s):  
Milling Time ◽  
Orthogonal Experiment ◽  
Weight Ratio ◽  
Hydrogen Desorption ◽  
Experiment Design ◽  
Variance Analysis ◽  
Range Analysis ◽  
Orthogonal Experiment Design ◽  
Optimum Performance ◽  
Orthogonal Experiments

Orthogonal experiment design and variance analysis were adopted to investigate the hydrogen desorption properties of NaAlH4and LiAlH4, which consisted of three stages, ball-milled under argon. Optimum milling condition was very important for the performance of NaAlH4and LiAlH4, which was obtained from the orthogonal experiments. The orthogonal experiment design considered three experimental factors, i.e. weight ratio of ball to power, weight ratio of ɸ8 ball to ɸ4 ball and milling time, which varied on three different levels, respectively. According to the range analysis and variance analysis from the orthogonal experiments, the weight ratio of ball to powder and ɸ8 ball to ɸ4 ball had more impacts on the hydrogen desorption time of NaAlH4,while the most sensitive influencing factor of LiAlH4was milling time. NaAlH4had the optimum performance when the weight ratio of ball to power was 30:1, the weight ratio of ɸ8 ball to ɸ4 ball was 0.5:1 and milling time was 0.5h. LiAlH4had the optimum performance when the weight ratio of ball to power was 40:1, the weight ratio of ɸ8 ball to ɸ4 ball was 0.5:1 and milling time was 2h.

scholarly journals Performance Optimization of High Specific Speed Centrifugal Pump Based on Orthogonal Experiment Design Method

Processes ◽  
2019 ◽  
Vol 7 (10) ◽  
pp. 728 ◽  
Author(s):  
Li ◽  
Ding ◽  
Shen ◽  
Jiang
Keyword(s):  
Centrifugal Pump ◽  
Performance Optimization ◽  
Design Method ◽  
Orthogonal Experiment ◽  
Three Dimensional ◽  
Experiment Design ◽  
Three Dimensional Model ◽  
Pump Design ◽  
Orthogonal Experiment Design ◽  
Specific Speed

A high specific speed centrifugal pump is used in the situation of large flow and low head. Centrifugal pump parameters need to be optimized in order to raise its head and efficiency under off-design conditions. In this study, the orthogonal experiment design method is adopted to optimize the performance of centrifugal pump basing on three parameters, namely, blade outlet width b2, blade outlet angle β2 and blade wrap angle φ. First, the three-dimensional model of the centrifugal pump is established by CFturbo and SolidWorks. Then nine different schemes are designed by using orthogonal table, and numerical simulation is carried out in CFX15.0. The final optimized combination of parameters is b2 = 24 mm, β2 = 24°, φ = 112°. Under the design condition, the head and efficiency of the optimized centrifugal pump are appropriately improved, the increments of which are 0.74 m and 0.48%, respectively. However, the efficiency considerably increases at high flow rates, with an increase of 6.9% at 1.5 Qd. The anti-cavitation performance of the optimized centrifugal pump is also better than the original pump. The results in this paper can provide references for parameter selection (b2, β2, φ) in the centrifugal pump design.

Affecting Study on Flow Regeneration Noise from Muffler Element with Perforated Plate

2013 ◽  
Vol 387 ◽  
pp. 305-309
Author(s):  
Hai Jun Zhao ◽  
Guo Hua Wang
Keyword(s):  
High Frequency ◽  
Design Method ◽  
Orthogonal Experiment ◽  
Perforated Plate ◽  
Expansion Ratio ◽  
Model Parameters ◽  
Orthogonal Experiment Design ◽  
Spectrum Characteristic ◽  
Peak Value ◽  
High Range

Making use of orthogonal experiment design method samples on muffler element with perforated plate are fixed, and a model of total sound power of flow regeneration noise and flow velocity, perforated diameter, expansion ratio, perforated ratio and length of perforated plate to inlet expansion is established, and the model parameters are solved, and quantity research of the noise effect is performed, and spectrum characteristic of flow regeneration noise from the muffler element is analyzed. It is achieved that the perforated diameter and the expansion ratio have important effect on flow regeneration noise, the reducing of the perforated diameter and improving expansion ratio is in favor of the reduction of flow regeneration noise from muffler element with perforated plate, and peak value frequency appears in the middle and high range, and the high frequency may be high velocity air flowing through little holes on the plate.

scholarly journals A New Process of Extracting Titanium from Vanadium–Titanium Magnetite

Crystals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 327
Author(s):  
Yandong Li ◽  
Shuangyin Chen ◽  
Huamei Duan
Keyword(s):  
Recovery Rate ◽  
Acid Leaching ◽  
Leaching Rate ◽  
Optimum Conditions ◽  
Solid Ratio ◽  
New Process ◽  
Leaching Experiments ◽  
Panxi Area ◽  
Vanadium Titanium ◽  
Titanium Magnetite

A new process of extracting titanium from vanadium–titanium magnetite (VTM) in the Panxi area in Sichuan, China is introduced in this work. Various experiments, including reduction–magnetic separation, leaching and hydrolyzing experiments, are carried out. The results show that the optimum conditions for leaching experiments are an acid/slag ratio of 4:1, a leaching temperature of 60 °C, a leaching time of 80 min, and a liquid/solid ratio of 3.2:1. The leaching rate of titanium in Ti-bearing slag is 92.41%. The optimum conditions for hydrolyzing experiments are an H+ concentration of 0.75 g·L−1, hydrolyzing temperature of 100 °C, and hydrolyzing time of 180 min, and the hydrolyzing rate of titanium in acid leaching liquor is 96.80%. After the leaching and hydrolyzing experiments, the recovery rate of titanium from the Ti-bearing slag is 89.45%.

scholarly journals Mechano-Activation and SHS of Difficultly Taken Ore

2014 ◽  
Vol 13 (3-4) ◽  
pp. 189
Author(s):  
O. Bayrakova ◽  
O. Golovchenko ◽  
S. Aknazarov
Keyword(s):  
Mechanical Activation ◽  
Chemical Activation ◽  
Leaching Rate ◽  
Optimal Conditions ◽  
Optimum Conditions ◽  
Activation Time ◽  
Technological Parameters ◽  
Leaching Process ◽  
Grinding Media ◽  
Refractory Ores

Technological parameters of opening refractory ores by mechanical activation which determine remaining and the morphology of the samples after mechanical activation, SHS synthesis and the leaching process has been defined. Mechano-chemical activation of arsenopirita in different modes increases process have been defined. Optimal conditions for activation: time - 30 min at a ratio of grinding media and mineral 2:1. Leaching rate was higher for the activated samples the same amount of time than the original. Extraction of gold for the chosen optimum conditions is 93.2-95 %.

scholarly journals Evaluation of influencing factors on the adaptability of ICD completion technology

2021 ◽  
Vol 261 ◽  
pp. 02071
Author(s):  
Guohui Zhang ◽  
Liangchuan Li ◽  
Rong Chen ◽  
Peng Wang ◽  
Guowen Zhang ◽  
...  
Keyword(s):  
Comprehensive Evaluation ◽  
Design Method ◽  
Orthogonal Experiment ◽  
Horizontal Wells ◽  
Water Production ◽  
Water Control ◽  
Orthogonal Experiment Design ◽  
Factors Affecting ◽  
Well Completion ◽  
Main Index

After years of research and practice, ICD well completion technology has become a relatively mature completion technology, and has been successfully applied in hundreds of horizontal Wells abroad. However, due to many factors affecting ICD effect, mature evaluation methods have not been completely established. At present, the main index of ICD water control development effect is to balance inflow profile and inhibit water production, and the evaluation factors involve reservoir, process and equipment structure. This paper summarizes the factors influencing the effects of ICD, using orthogonal experiment design method to carry on the comprehensive evaluation, and puts forward the corresponding Suggestions

Analysis and Study on Surface Quality of Workpiece of Short Electric Arc Machining Process

2012 ◽  
Vol 522 ◽  
pp. 47-51 ◽  
Author(s):  
Jian Ping Zhou ◽  
Yan Xu ◽  
Jun Ze Zhang ◽  
Bo Ma
Keyword(s):  
Surface Quality ◽  
Design Method ◽  
Orthogonal Experiment ◽  
Electric Arc ◽  
Machining Process ◽  
Test Results ◽  
Range Analysis ◽  
The Poor ◽  
Process Factors

Owing to the Poor Surface Quality of Workpiece Processed by SEAM, the Work Used the Design Method of Orthogonal Experiment to Search for the Rules between Process Factors and Surface Quality of Machining. through the Range Analysis of Test Results and the Establishment of Process Regression Equation to Find the Rules between the Surface Quality of Workpiece and Process Factors, the Paper Provided the Test and Theoretical Basis to Achieve the Purpose of Improving the Surface Quality of Workpiece of Short Electric Arc Machining Process.

Orthogonal Experiment Study on the Hydrogen Desorption Properties of NaAlH4 and LiAlH4

2011 ◽  
Vol 413 ◽  
pp. 491-498
Author(s):  
Xue Ping Zheng ◽  
Xin Feng ◽  
Xiao Bin Lin ◽  
Sheng Lin Liu
Keyword(s):  
Milling Time ◽  
Orthogonal Experiment ◽  
Weight Ratio ◽  
Hydrogen Desorption ◽  
Experiment Design ◽  
Variance Analysis ◽  
Range Analysis ◽  
Orthogonal Experiment Design ◽  
Optimum Performance ◽  
Orthogonal Experiments

Orthogonal experiment design and variance analysis were adopted to investigate the hydrogen desorption properties of NaAlH4and LiAlH4, which consisted of three stages, ball-milled under argon. Optimum milling condition was very important for the performance of NaAlH4and LiAlH4, which was obtained from the orthogonal experiments. The orthogonal experiment design considered three experimental factors, i.e. weight ratio of ball to power, weight ratio of ɸ8 ball to ɸ4 ball and milling time, which varied on three different levels, respectively. According to the range analysis and variance analysis from the orthogonal experiments, the weight ratio of ball to powder and ɸ8 ball to ɸ4 ball had more impacts on the hydrogen desorption time of NaAlH4,while the most sensitive influencing factor of LiAlH4was milling time. NaAlH4had the optimum performance when the weight ratio of ball to power was 30:1, the weight ratio of ɸ8 ball to ɸ4 ball was 0.5:1 and milling time was 0.5h. LiAlH4had the optimum performance when the weight ratio of ball to power was 40:1, the weight ratio of ɸ8 ball to ɸ4 ball was 0.5:1 and milling time was 2h.

scholarly journals The Assessment of Cutting Force with Taguchi Design in Medium Carbon Steel–Applied Spheroidization Heat Treatment

2017 ◽  
Vol 50 (4) ◽  
pp. 89-96 ◽  
Author(s):  
Şehmus Baday ◽  
Hüdayim Başak ◽  
Fikret Sönmez
Keyword(s):  
Cutting Force ◽  
Feed Rate ◽  
Cutting Forces ◽  
Design Method ◽  
Orthogonal Experiment ◽  
Experiment Design ◽  
Depth Of Cut ◽  
Machining Parameters ◽  
Orthogonal Experiment Design ◽  
Medium Carbon

In this study, the analysis of cutting forces on medium carbon AISI 1050—to which different spheroidization heat treatments were applied—was conducted by the mixed-level Taguchi orthogonal experiment design method. In the experiments, besides the parameters of feed rate, depth of cut and cutting speed having effect on cutting forces as a factor in orthogonal design, the spheroidization time and temperature parameters were also used. By the performed orthogonal experiment design method, the values of cutting forces were estimated using the five-factor, two- and three-leveled Taguchi L36 (22 × 33) mixed orthogonal experiment design method. The effectiveness of the machining parameters on the cutting force was revealed by performing analysis of variance test. Moreover, the effectiveness rates of the parameters were also determined in the study as per the signal noise rates. Consequently, it has been observed that the feed rate is more effective on the cutting forces compared to other parameters.

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