Preparation and properties of composite mineral powders

Surface modification of purified fly ash and application in polymer

“…Additionally, these methods cannot improve the color, restricting the wide use of FA as a filler. In order to meet the demands of the plastics industry for fillers with high quality, developing a surface modification technology [7][8][9] to improve FA properties with high whiteness values and large specific surface area is an important research keystone.…”

Nanostructured modification of mineral particle surfaces in Ca(OH)2–H2O–CO2 system

“…Grain size of the coating particles is in the range of 20-80 nm, depending on the experimental conditions. Therefore, specific surface area of the prepared composite powders of calcuim carbonate can be increased by triplicity to that of the uncoated calcuim carbonate powders [10] under certain experimental conditions. Fan Shi-Min [11] has discussed in detail the effects of several factors, such as concentration of Ca(OH) 2 , adding time of GCC powders, stirring intensity, on the preparation of the coated composite in the previous article.…”

“…Successful preparation of wollastonite-CaCO 3 composite particles modified by nanosized calcium carbonate in the same system has also been achieved, suggesting the versatile adaptability of the coating technology to different mineral powders [2]. Specific surface area of the prepared wollastonite-CaCO 3 composite particles is as four times high as that of the uncoated wollastonite powders although the experimental details are not shown here [10].…”

Preparation, characterisation of thermally treated Algerian dolomite powders and application to azo-dye adsorption

“…It is used as a source of both magnesium metal and magnesia in different branches of industry such as the food and pharmaceutical industries and the production of fertilizers, glass, and building materials. One of the main applications is in the field of refractory materials, in order to produce fire-resistant products, used in metallurgy, chemical and ceramic industries [2][3][4]. Dolomite was also used as transesterification catalyst for palm kernel oil [5] and adsorbents for substances such as iodine [6], dyes [7], copper(II) [8], lead(II) and cadmium(II) [9], CO 2 [10] and so on.…”