Zinc Oxide Production Technology of Distillation Twice Based on Scrap Miscellaneous Zinc Materials

2014 ◽  
Vol 852 ◽  
pp. 36-39
Author(s):  
Qun Shan Liu ◽  
Jun Xia Yan
Keyword(s):  
Zinc Oxide ◽  
High Purity ◽  
Raw Materials ◽  
Low Cost ◽  
New Technology ◽  
Zinc Content ◽  
Metallic State ◽  
Iron And Steel ◽  
Wide Range ◽  
Easy Operation

By using scrap miscellaneouszinc materialas raw materials, a new technology with the help of two distillationsby fire method to produce zinc oxide was invented.The scrap miscellaneous zinc materialshave complex sources, containing dust, stone, iron and steel parts and other impurities, and zinc content is more than 15% over a wide range. The presence of zinc is in the form of pure metallic state, alloy state and oxidation state.Distillation process has two steps, the primary for removing the principal impurities and the second for zinc oxide purification. With less investment, low cost, simple equipment, easy operation, environmental protection and other advantages, this method is fit for production of high-purity zinc oxide and can also be used for the production of nanoscale high purity zinc oxide.

scholarly journals Understanding the Future Impacts of Electric Vehicles—An Analysis of Multiple Factors That Influence the Market

Vehicles ◽  
2021 ◽  
Vol 3 (4) ◽  
pp. 851-871
Author(s):  
Jonathan Wellings ◽  
David Greenwood ◽  
Stuart R. Coles
Keyword(s):  
Electric Vehicle ◽  
Electric Vehicles ◽  
Ethical Issues ◽  
Raw Materials ◽  
New Technology ◽  
Vast Number ◽  
Wide Range ◽  
Key Issues ◽  
The Impact ◽  
Vehicle Market

The electric vehicle market is an increasingly important aspect of the automotive industry. However, as a relatively new technology, several issues remain present within the industry. An analysis is utilised to examine these issues, along with how they affect the industry and how they can be tackled. Several key issues that affect the electric vehicle market, as well as how efforts to address these issues influence the market, are identified. The analysis also includes the examination of ethical issues, with the issues that arise from the production of raw materials for electric vehicles. The analysis and examination of ethical issues display a wide range of problems in the industry. However, it did highlight the efforts being made to lessen the effect of these problems by various groups, such as regulation by EU and US governing bodies on the materials mined. From this analysis, this paper identifies that many of the other factors examined are directly or indirectly influenced by political and economic factors, also examined in this review. This highlights the impact that governing bodies and businesses have on a vast number of issues that are present within the market and how they can resolve the harmful factors examined.

High Value Thin Wafer Support Technology for 3DIC

2014 ◽  
Vol 2014 (1) ◽  
pp. 000718-000723
Author(s):  
Jared Pettit ◽  
Alman Law ◽  
Alex Brewer ◽  
John Moore
Keyword(s):  
Adhesion Force ◽  
Low Cost ◽  
New Technology ◽  
Value Added ◽  
Batch Process ◽  
New Approach ◽  
Wide Range ◽  
Temporary Bonding ◽  
Technical Challenges ◽  
Conventional Practice

As the 3DIC market matures, more is understood about the technical and cost challenges [1]. At the 2013 Semicon-West gathering, a panel of global experts identified these technical challenges to represent some of the most significant barriers to the industry's efforts to maintain progress with Moore's Law [2]. Searching and achieving high value manufacturing of 3DIC devices requires wrestling with several technologies and processes, all which may assert a different value for the manufacturer [3]. Current technologies for thin wafer support use a wide range of adhesives applied to the device wafer, bonded to a carrier, backside processed, and de-bonded by an array of methods. Daetec has been investigating temporary bonding for nearly 15yrs, is producing a range of products for semiconductor (e.g. WaferBondTM (Brewer-Science, Inc.)) [4], and for the display market using a low-cost tunable adhesion-force material that is peeled by simple means [5]. Daetec has developed a new technology, DaeBond 3DTM, allowing de-bonding to occur in a batch process while thinned wafers are affixed to film frames. This new approach provides a shift in conventional practice. Our paper presents several temporary bonding options with DaeBond 3DTM in an effort to define value-added approaches for thin wafer handling.

scholarly journals A Facile and Low-Cost Method to Produce Ultrapure 99.99999% Gallium

Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2308 ◽  
Author(s):  
Kefeng Pan ◽  
Ying Li ◽  
Jiawei Zhang ◽  
Qing Zhao
Keyword(s):  
Liquid Phase ◽  
High Purity ◽  
Raw Materials ◽  
Low Cost ◽  
Crystallization Rate ◽  
Segregation Coefficient ◽  
Crystal Direction ◽  
Partial Recrystallization ◽  
Removal Ratio ◽  
Critical Raw Materials

As one of the critical raw materials, very pure gallium is important for the semiconductor and photoelectric industry. Unfortunately, refining gallium to obtain a purity that exceeds 99.99999% is very difficult. In this paper, a new, facile and efficient continuous partial recrystallization method to prepare gallium of high purity is investigated. Impurity concentrations, segregation coefficients, and the purification effect were measured. The results indicated that the contaminating elements accumulated in the liquid phase along the crystal direction. The order of the removal ratio was Cu > Mg > Pb > Cr > Zn > Fe. This corresponded to the order of the experimentally obtained segregation coefficients for each impurity: Cu < Mg < Pb < Cr < Zn < Fe. The segregation coefficient of the impurities depended strongly on the crystallization rate. All observed impurity concentrations were substantially reduced, and the purity of the gallium obtained after our refinement exceeded 99.99999%.

Development of Reduced Rolling Process for Steel Plate

2012 ◽  
Vol 706-709 ◽  
pp. 2101-2106
Author(s):  
Xiu Hua Gao ◽  
Hui Fang Lan ◽  
Lin Xiu Du ◽  
Chun Lin Qiu
Keyword(s):  
Low Cost ◽  
New Technology ◽  
Rolling Process ◽  
Steel Plates ◽  
High Rate ◽  
Iron And Steel Industry ◽  
Iron And Steel ◽  
Heavy Plate ◽  
New Type ◽  
Microstructure And Mechanical Property

The low cost Q460 and Q550 steel plates were produced in the 4200mm wide and heavy plate mill using Normal Hot Rolling and High Rate Cooling (NHR+HRC) process. The effect of both rolling processes on microstructure and mechanical property was studied. The results indicate that new type process can realize the good match between microstructure and mechanical properties. Meanwhile the new technology can short rolling time, reduce alloying addition, and improve the output of mill, it is also promote iron and steel industry developing continuously.

scholarly journals Zinc oxide-paper based sensor for photoconductive ultraviolet detection

2020 ◽  
Vol 20 (1) ◽  
pp. 60
Author(s):  
Mohammad Shafiq Che Soh ◽  
Mastura Shafinaz Zainal Abidin ◽  
Shaharin Fadzli Abd Rahman ◽  
Shuthish Elangkovan ◽  
Ahmad Bukhairi Md Rashid
Keyword(s):  
Zinc Oxide ◽  
Uv Light ◽  
Low Cost ◽  
New Technology ◽  
Ultraviolet Detection ◽  
Food Quality Control ◽  
Whatman Filter Paper ◽  
Current Voltage ◽  
Printing Paper ◽  
Paper Sensor

Paper based sensor is the new technology to fabricate a simple, portable, and low cost device that exhibits the comparable properties and functions with those fabricated using complex fabrication process. Paper based sensor is usually applied in environmental monitoring, health diagnostics, and food quality control.  This research is focusing on the paper based sensor that will contribute to the development of Ultraviolet (UV) sensor. The fabrication of the sensor was done by using different grade of pencil, namely 6B and 2B on different type of paper. The different grade of pencil corresponds to different percentage of graphite and clay. As for the type of paper, A4 printing paper and Whatman filter paper were used. UV sensing operation was analyzed from the measurement of current-voltage (I-V) characteristics under the exposure of UV light. Zinc oxide (ZnO) was coated on the sensor to facilitate the detection in the presence of UV. The sample fabricated using 6B pencil grade on A4 printing paper and with ZnO coating showed a better UV sensing performance compared to other samples. This is due to the high conduction of 6B pencil grade and smooth surface of A4 printing paper. The ZnO coating increased the sensor sensitivity and response towards the UV light. These findings provide valuable information which can be used in fabricating a low-cost and simple UV paper sensor.

Influences of Stirring Speed and Post Annealing Temperature on the Properties of Zinc Oxide Colloid Prepared by Sol-Gel Spin Coating Method

2016 ◽  
Vol 701 ◽  
pp. 159-163 ◽  
Author(s):  
Sheen Jeff Teh ◽  
Yew Keong Sin ◽  
Kah Yoong Chan ◽  
Nisha Kumari Devaraj
Keyword(s):  
Zinc Oxide ◽  
Optical Properties ◽  
Spin Coating ◽  
Annealing Temperature ◽  
Low Cost ◽  
Sol Gel ◽  
Structural And Optical Properties ◽  
Post Annealing ◽  
Wide Range ◽  
Post Annealing Temperature

Zinc oxide (ZnO) colloid has drawn significant attention recently due to its wide range of potential applications such as photonic crystals, solar cells, sensors, and other optical devices. In this work, low cost sol-gel spin coating technique was employed to synthesis ZnO colloid. The influences of stirring speed and post annealing temperature on the properties of ZnO colloid was investigated. The structural and optical properties of ZnO colloid was characterized using field-emission scanning electron microscopy (FESEM) and ultraviolet-visible (UV-Vis) spectrophotometer, respectively. Subsequently, Tauc method was used to estimate the optical band gap of the ZnO colloid based on the optical transmittance data. The effects of the stirring speed and post annealing temperature on the structural and optical properties of ZnO colloid are revealed and discussed in this paper. It was found that ZnO colloid prepared by the stirring speed of 500rpm and 400°C post annealing temperature demonstrates the best dispersity quality of colloid system.

Lapping Parabolic Parts Using the Bending Lapping Tool

2014 ◽  
Vol 900 ◽  
pp. 592-595
Author(s):  
Chun Min Shang ◽  
Dong Mei Zhang ◽  
Jian Dong Yang
Keyword(s):  
High Precision ◽  
Low Cost ◽  
New Technology ◽  
Experimental Result ◽  
Work Piece ◽  
Face Shape ◽  
Minimal Error ◽  
Shape Precision ◽  
The Cost ◽  
Easy Operation

Lapping the parabolic work-piece with the lapping tool in bending method is a new technology, which has some good characters such as low cost, scope broad, easy operation, and high precision. The lapping tool is formed by the means of bending and forming with solid abrasives on it in the experiment. The experiment shows that parabolic workpiece can be lapped using this method. The experimental result indicates that the work-piece face shape precision is high with the lapping tool, the maximal error is 0.0881mm and the minimal error is-0.0011mm, and lapping efficiency is high and the cost is low.

Influence of PEG20000 on Ultrafine ZnO Flowers

2011 ◽  
Vol 239-242 ◽  
pp. 1743-1746 ◽  
Author(s):  
Xiao Yi Shen ◽  
Yi Sun ◽  
Yuan Liang ◽  
Yu Chun Zhai ◽  
Zhi Qiang Ning
Keyword(s):  
Crystal Structure ◽  
Zinc Oxide ◽  
Absorption Spectrum ◽  
Polyethylene Glycol ◽  
Sodium Hydroxide ◽  
High Purity ◽  
Zinc Acetate ◽  
Raw Materials ◽  
Hexagonal Wurtzite Structure ◽  
Blue Shift

With zinc acetate and sodium hydroxide used as raw materials, while polyethylene glycol employed as dispersant agent, ultrafine zinc oxide flowers were successfully synthesized by hydrothermal method. The influence of the concentration of PEG20000 on the morphologies of ZnO flowers was discussed. The as-synthesized ZnO flowers consisted of microrods with hexagonal morphologies. The crystal structure and ultraviolet absorbing performance of ZnO flowers were also characterized using XRD, UV-VIS absorption spectrum. The results indicate that ZnO flowers are hexagonal wurtzite structure with high purity. There is a strong excition absorption peak at 300 nm in UV-VIS absorption spectrum and blue shift existed obviously.

scholarly journals An Overview of Semisolid Processing of Aluminium Alloys

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
M. S. Salleh ◽  
M. Z. Omar ◽  
J. Syarif ◽  
M. N. Mohammed
Keyword(s):  
Automotive Industry ◽  
Aluminium Alloys ◽  
Raw Materials ◽  
Low Cost ◽  
New Technology ◽  
Research Work ◽  
Production Method ◽  
Semisolid Processing ◽  
Shaping Process ◽  
Feedstock Production

Semisolid metal processing (SSM) or thixoforming is a new technology that offers several advantages over liquid processing and solid processing. This process utilizes semisolid behavior as well as reduces macrosegregation, porosity, and forming forces during shaping process. A lot of research work has been carried out by various researchers in order to exploit the potential of this process to produce different products especially for automotive industry. This paper will summarise the rheological behavior of aluminium alloys in semisolid slurries, thixoformability of modified aluminium alloys, the effect of feedstock production method on mechanical properties, and the importance of developing low-cost raw materials for semisolid processing.

scholarly journals Extraction of the Rare Element Vanadium from Vanadium-Containing Materials by Chlorination Method: A Critical Review

Metals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1301
Author(s):  
Shiyuan Liu ◽  
Weihua Xue ◽  
Lijun Wang
Keyword(s):  
Raw Materials ◽  
Steel Production ◽  
Research Progress ◽  
Vanadium Slag ◽  
Rare Element ◽  
Iron And Steel ◽  
Wide Range ◽  
Spent Catalysts ◽  
Iron And Steel Production ◽  
Titanium Magnetite

Vanadium as a rare element has a wide range of applications in iron and steel production, vanadium flow batteries, catalysts, etc. In 2018, the world’s total vanadium output calculated in the form of metal vanadium was 91,844 t. The raw materials for the production of vanadium products mainly include vanadium-titanium magnetite, vanadium slag, stone coal, petroleum coke, fly ash, and spent catalysts, etc. Chlorinated metallurgy has a wide range of applications in the treatment of ore, slag, solid wastes, etc. Chlorinating agent plays an important role in chlorination metallurgy, which is divided into solid (NaCl, KCl, CaCl2, AlCl3, FeCl2, FeCl3, MgCl2, NH4Cl, NaClO, and NaClO3) and gas (Cl2, HCl, and CCl4). The chlorination of vanadium oxides (V2O3 and V2O5) by different chlorinating agents was investigated from the thermodynamics. Meanwhile, this paper summarizes the research progress of chlorination in the treatment of vanadium-containing materials. This paper has important reference significance for further adopting the chlorination method to treat vanadium-containing raw materials.

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