98/02123 Preparation of coumarone blends with tar oils and coal tar fraction as raw materials for carbon black manufacture

1998 ◽  
Vol 39 (3) ◽  
pp. 192
Keyword(s):  
Carbon Black ◽  
Raw Materials ◽  
Coal Tar

One-Step Method of Carbon Thermal Reduction and Nitride to Produce Vanadium Nitrogen Alloy

2012 ◽  
Vol 476-478 ◽  
pp. 194-198 ◽  
Author(s):  
Zhi Chao Chen ◽  
Zheng Liang Xue ◽  
Wei Wang ◽  
Yue Yu ◽  
Qiang Liu ◽  
...  
Keyword(s):  
Carbon Black ◽  
Raw Materials ◽  
Thermal Reduction ◽  
Low Carbon ◽  
High Nitrogen ◽  
Step Method ◽  
Preferential Formation ◽  
One Step ◽  
Nitrogen Alloy ◽  
Product Forms

Keywords: vanadium pentoxide；carbon black；reduction and nitridation；vanadium nitrogen alloy. Abstract. The V2O5 extracted from low vanadium shale and carbon black are used as raw materials to prepare briquetting samples through mixing, grinding and pressing. The samples are prereduced, final reduced and nitrated to produce vanadium nitrogen alloy with high nitrogen content. Thermodynamic analysis and experiment results show that：（1）In order to avoid V2O5 volatilization loss during reduction, the briquetting samples should be pre-reduced for 4 hours below the melting point 670°C of V2O5, which can transform V2O5 into low valence vanadium oxide.（2）During V2O5 being self-reduction under N2 atmosphere, if the final reduction temperature is below 1271°C, the VN is preferential formation; if more than 1271°C, the reduced product forms V4C3.（3）To make a product with high nitrogen and low carbon content, the final reduction and nitride temperature should be controlled below 1300°C.

Pitch-based carbon fibers: preparation and applications

2021 ◽  
Vol 19 (3) ◽  
pp. 159-169
Author(s):  
B. B. Kaidar ◽  
G.T. Smagulova ◽  
A.A. Imash ◽  
S. Zhaparkul ◽  
Z.A. Mansurov
Keyword(s):  
Composite Materials ◽  
Electrical Properties ◽  
Carbon Fibers ◽  
Storage Systems ◽  
Raw Materials ◽  
Coal Tar ◽  
Commercial Use ◽  
Mechanical And Electrical Properties ◽  
Reinforced Composite ◽  
The Cost

Attention to carbon fiber (CF) conditioned by their unique physicochemical, mechanical and electrical properties, which makes them in demand in various fields of activity. Today there are several kinds of carbon fibers, most of which (about 90%) are made of polyacrylonitrile (PAN). Despite the fact that carbon fibers are produced from several types of different precursors, their widespread commercial use is limited by the high cost of the product. Has, many research and engineering group seek to reduce the cost of production by using cheap carbon raw materials. A likely solution to this problem is the exploitation of coal, petroleum and coal tar as an effective progenitor for CF production. This review discusses neoteric accomplishment in CF synthesis using various carbon pitches. The possibility of obtaining carbon fibers based on resin with the addition of PAN is presented, and the prospects for their use in energy storage systems and various reinforced composite materials are described in detail.

scholarly journals Voltammetric Evaluation of Diclofenac Tablets Samples through Carbon Black-Based Electrodes

2019 ◽  
Vol 12 (2) ◽  
pp. 83 ◽  
Author(s):  
Carlos Eduardo Peixoto da Cunha ◽  
Edson Silvio Batista Rodrigues ◽  
Morgana Fernandes Alecrim ◽  
Douglas Vieira Thomaz ◽  
Isaac Yves Lopes Macêdo ◽  
...  
Keyword(s):  
Carbon Black ◽  
Raw Materials ◽  
Low Cost ◽  
Good Recovery ◽  
Electroanalytical Methods ◽  
Graphite Electrodes ◽  
Pharmaceutical Samples ◽  
Analytical Potential ◽  
The World ◽  
Interesting Alternative

Diclofenac (DIC) is a non-steroidal anti-inflammatory drug of wide use around the world. Electroanalytical methods display a high analytical potential for application in pharmaceutical samples but the drawbacks concerning electrode fouling and reproducibility are of major concern. Henceforth, the aim of this work was to propose the use of alternative low-cost carbon black (CB) and ionic liquid (IL) matrix to modify the surface of pencil graphite electrodes (PGE) in order to quantify DIC in raw materials, intermediates, and final products, as well as in stability assays of tablets. The proposed method using CB+IL/PGE displayed good recovery (99.4%) as well as limits of detection (LOD) of 0.08 µmol L-1 and limits of quantification (LOQ) of 0.28 µmol L−1. CB+IL/PGE response was five times greater than the unmodified PGE. CB+IL-PGE stands as an interesting alternative for DIC assessment in different pharmaceutical samples.

Study on the properties of coal-based high-purity graphite

2019 ◽  
Vol 9 (6) ◽  
pp. 668-674 ◽  
Author(s):  
Qili Wang ◽  
Mingquan Yu ◽  
Jiannan Gong ◽  
Fengtao Zhang
Keyword(s):  
High Purity ◽  
Raw Materials ◽  
Coal Tar ◽  
Value Added ◽  
Coal Industry ◽  
Coal Pitch ◽  
Skeletal Density ◽  
Pitch Coke ◽  
Chinese Coal ◽  
Value Added Products

As one of the major value-added products of coal processing and utilization, coal pitch coke and coal tar pitch are used as raw materials to prepare high-purity graphite. The structure characteristics and properties were measured by experiments. The results show that the high-purity graphite has excellent physical properties: the skeletal density of 1.81–1.91 g/cm3, the Shore hardness of 45.5–66.6 Hs, the flexural strength of 33.0–46.1 MPa, the compressive strength of 65.6–75.8 MPa, the ash content of 67–181 ppm, the thermal expansion coefficient of 3.71–4.11 × 10–6/°C, and the electrical resistivity of 8.72–12.13 μΩ · m. Consequently, coal-based graphite materials have excellent properties and good application prospects in solar energy industry, which is an effective exploration for the transformation and upgrading of Chinese coal industry.

Investigation of Carbon Black Production from Coal Tar via Chemical Looping Pyrolysis

2016 ◽  
Vol 30 (4) ◽  
pp. 3535-3540 ◽  
Author(s):  
Xu Jiang ◽  
Longlong Zhang ◽  
Fengyin Wang ◽  
Yongzhuo Liu ◽  
Qingjie Guo ◽  
...  
Keyword(s):  
Carbon Black ◽  
Coal Tar ◽  
Chemical Looping ◽  
Carbon Black Production

Nanostructured Carbon and Graphite – Ultra Lightweight Engineering Materials

2006 ◽  
Vol 45 ◽  
pp. 1495-1504 ◽  
Author(s):  
Frank Kern ◽  
Rainer Gadow
Keyword(s):  
Raw Materials ◽  
Coal Tar ◽  
High Hardness ◽  
Nanostructured Carbon ◽  
Tribological Behaviour ◽  
Fine Grain ◽  
Carbon And Graphite ◽  
Lightweight Engineering ◽  
Ceramic Manufacturing ◽  
Manufacturing Technologies

Fine grain graphite has been an important material for tribologically loaded components such as seals and bearings for almost a century. Requirements are becoming more severe and complex concerning miniaturization, higher normal loads and toxicological restrictions. Today state-of-the-art production of high quality fine grain graphite from binder and filler begins to reach its technical and economic limits and manufacturers face some pressure that their products are suppressed by other materials like silicon carbide. Nanostructured carbon and graphite derived from sinterable carbon such as pretreated petrol-, coal-tar- as well as synthetic pitch precursors offers the opportunity to improve the material properties, simplify the production processes and reduce the environmental and workplace protection requirements. To achieve this objective raw materials and compounds were adapted to near net-shape ceramic manufacturing technologies. The feedstocks were formed and shaped. Post treatment and sintering technologies were developed in order to obtain carbon components with superior mechanical strength, and both very high hardness and self lubricating tribological behaviour even at high normal loads.

SiC Platelets Synthesized by Powder-Heating Technique

2007 ◽  
Vol 336-338 ◽  
pp. 939-941
Author(s):  
Yong Qiang Meng ◽  
Zhi Min Bai ◽  
Chang Hong Dai ◽  
Bao Bao Zhang
Keyword(s):  
Silicon Carbide ◽  
Reaction Time ◽  
Carbon Black ◽  
Raw Materials ◽  
Low Cost ◽  
Average Diameter ◽  
New Method ◽  
Conventional Heating ◽  
High Yield ◽  
Sio2 Powder

A new method for producing silicon carbide platelets with low cost and high yield was introduced. The silicon carbide platelets were synthesized by powder-heating techniques with carbon black and SiO2 powder as raw materials and CoCl2 as catalyst. The starting mixtures were heated at a temperature in the range of 1800-2000°C for the duration of about 2-4h to produce substantially completely unagglomerated silicon carbide platelets with a thickness of 5-20μm and the average diameter of 50-200μm. Compared to the conventional heating, the powder-heating technique is advantageous of less investment on equipment, easy to manufacture and convenient to operate. Furthermore, it is very suitable for realizing the scaled production because of the lower synthesizing temperature, shorter reaction time and greater output.

Preparation of A14SiC4 by Solid-State Reaction

2011 ◽  
Vol 399-401 ◽  
pp. 817-821
Author(s):  
Xiao Hong Liu ◽  
Hui Wang ◽  
Ling Ke Zeng ◽  
Cheng Ji Deng
Keyword(s):  
Carbon Black ◽  
Raw Materials ◽  
Heating Temperature ◽  
Argon Atmosphere ◽  
Mass Ratio ◽  
X Ray Diffraction ◽  
X Ray ◽  
Higher Temperature ◽  
Flake Structure ◽  
Scanning Electron

In this paper, A14SiC4 was synthesized by using flint, aluminum and carbon black as raw materials，and they mass ratio was 28:50:22. The samples were fired at 1500°C、1600°C and 1700°C in an argon atmosphere. The phase compositions were determined by X-ray diffraction (XRD), the microstructures were examined by scanning electron microscope (SEM) and the elemental and quantitative compositions were determined by the energy dispersive X-ray spectroscopy (EDX). The results showed that the flint reacted with the carbon black, and produced Al2O3 and SiC firstly; meanwhile Al4C3 as intermediate product formed by the reaction between Al and C. Then a certain Al4C3 reacted with SiC, and produced A14SiC4; most Al4C3 reacted with the Al2O3, and produced Al4O4C at higher temperature. Subsequently, the Al4O4C and the SiC reacted with carbon black, and produced A14SiC4. The formed quantity of A14SiC4 increased as the heating temperature was raised, and crystal structure was the flake structure of 1-2μm thickness and about 10μm length. The formation mechanism of A14SiC4 was also discussed.

Sol-Gel Combustion Synthesis of Silica/ Carbon Black Pigment

2012 ◽  
Vol 554-556 ◽  
pp. 636-639
Author(s):  
Qi Fu Bao ◽  
Wei Xia Dong ◽  
Qi Bing Chang ◽  
Jian Er Zhou
Keyword(s):  
High Temperature ◽  
Carbon Black ◽  
Combustion Synthesis ◽  
Raw Materials ◽  
Sol Gel ◽  
Black Pigment ◽  
Prepared Sample ◽  
Gel Combustion ◽  
Combustion Technique

A green silicon-containing carbon black pigment was synthesized via a sol-geo combustion technique using TEOS and black ink as raw materials. The obtained black pigment was characterized by XRD, TEM and UV-vis absorption spectrophotometer. The results show that the silicon coated with carbon black pigment can be formed at pH ≥ 2 and the black pigment does not change its color after calcinations at 1300 °C in air implying the carbon black is coated completely with SiO2. When pH is 4, the properties of as-prepared sample are similar with the conventional high-temperature pigment. XRD and SEM further confirm that silicon coats with carbon black fully. The silica/ carbon black pigment may represent an opportunity for the applications in the decoration of the high-temperature ceramic.

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