Depending on the combustion process and RH composition, the rice husk ash may have different colors, which could be, high carbon char, low carbon gray ash, carbon-free pink and white ash. By using different treatment temperatures, pre- and post-purification with different agents (acids, bases, etc.), different structures and purities can be ...

Nano-rice husk ashes were prepared by burning rice husk with a self-propagating method. The white carbon black with high purity was prepared by an alkali dissolving–acid reaction method from nano-husk ash. The super-hydrophobic SiO2 films were prepared by the sol–gel method using hexamethyldisilazane as a modifier. The effects of the pH and reaction time in the acid reaction process …

A process is provided for making high-quality carbon blacks at unusually good yields in a highly compact reaction space. The key steps of the process are the generation of a very hot combustion gas stream moving at very high speed in essentially plug flow by burning a hydrocarbon gas in oxygen in a compact combustion zone under conditions of very high heat release assuring the attainment of ...

The preparation of carbon black by various processes has been reported. Moreover, carbon black is also prepared by pyrolysis of polymer and hydrocarbon, plasma synthesis, and by hydrolysis of ...

2.2 Preparation of white carbon black. The basic process was shown in Figure 1, and the process was mainly divided into four steps. The pretreated RHs were firstly calcined at 500, 600, 700, and 800°C respectively to obtain RH ash. The RH ash …

We claim: 1. A process for producing carbon black feedstock from a direct coal liquefaction process, comprising: a) feeding a first feed of coal, recycle slurry oil and hydrogen under liquefaction conditions to one or more liquefaction reactors to create a liquid product stream; b) feeding said liquid products stream to an atmospheric fractionator to create a naphtha stream, a diesel stream…

What is claimed is: 1. A method for the preparation of carbon black adsorbent pellets of a high specific surface area larger than 600 m 2 /g from a carbon black-containing water obtained from the partial combustion or partial gasification of liquid oil combustibles or oil-containing solid combustibles which consists of . contacting said carbon black-containing water with an aggregation medium ...

A process for cleaning a wastewater stream which comprises soot and is obtained in the preparation of acetylene, the soot being present in finely divided form in the wastewater, wherein the soot is removed by subjecting the wastewater to a solid concentration by sedimentation and then the soot sludge obtained in the sedimentation is dewatered further by a pressure filtration.

White carbon black is a general term for fine powder or ultrafine particle anhydrous and hydrated silicon dioxide or silicate. It is a white, non-toxic, amorphous fine powder or granular substance, and its silicon dioxide content is greater than 90%, the original particle size is generally 5-40nm, because the surface contains more hydroxyl groups, it is easy to absorb water and …

The ash content of the pyrolytic carbon black was reduced from 22.5% to 8.4% after rinsing with hydrochloric acid, and the tensile stress at 300% was increased by about 2.2 MPa. The pyrolysis ...

One of the most important conditions for preparation of "ultra fine" solid particles by precipitation is high and uniform supersaturation Based on investigations into impinging streams, a submerged circulative impinging stream reactor (SCISR) has been developed, which has the special flow configuration of circulating perfect mixing flow non mixing flow in series and promotes micromixing ...

white carbon black, can be produced from high alumina fly ash of Junggar by this novel process. Keywords: high alumina fly ash, alumina extraction, sinter. 1 Introduction The generation of combustion waste is a global problem with severe implications for human health, environment and industry.

2.2 | Preparation of white carbon black The basic process was shown in Figure 1, and the process was mainly divided into four steps. 1.The pretreated RHs were firstly calcined at 500, 600, 700, and 800°C respectively to obtain RH ash. The RH ash was crushed and evenly mixed for further use. 2.

The ash content of the pyrolytic carbon black was reduced from 22.5% to 8.4% after rinsing with hydrochloric acid, and the tensile stress at 300% was increased by about 2.2 MPa. Keywords Waste tyre, recovery, carbon black, pyrolysis, …

12%Nano-rice husk ashes were prepared by burning rice husk with a self-propagating method. The white carbon black with high purity was prepared by an alkali dissolving–acid reaction method from nano-husk ash. The super-hydrophobic SiO2 films were prepared by the sol–gel method using hexamethyldisilazane as a modifier. The effects of the pH and reaction time in the acid reaction process …