China
Africa
Explore chapters and articles related to this topic
Market Potential Assessment of Gypsum Industry
Published in Manjit Singh, Gypsum & Gypsum Products, 2023
Perlite is an amorphous volcanic glass which has a relatively high water content and occurs naturally. It has one of the most unusual property, i.e., it greatly expands when sufficiently heated.
Utilization of Iron Ore Tailings in Bricks
Published in Karra Ram Chandar, B. C. Gayana, P. Shubhananda Rao, Mine Waste Utilization, 2022
P. Shubhananda Rao, Karra Ram Chandar
Unexpanded perlite has a bulk density of around 1100 kg/m3, while typical expanded perlite (EP) has a bulk density of about 30–150 kg/m3 (Samar and Saxena 2016). Because of light weight and better insulating characterization of perlite, it is used in lightweight concrete, loose fill masonry insulation, chimney linings, etc. The use of perlite in bricks may act as density controller and will impact many other advantages like heat insulation, light weight, acoustic insulation properties, etc.
Precoat Filtration
Published in Saravanamuthu Vigneswaran, Roger Ben Aim, Water, Wastewater, and Sludge Filtration, 2020
Perlite is a naturally occurring form of siliceous volcanic glass that is left behind after a period of volcanic activity of earth. Perlite ore can be found in deposits throughout the world. However, few ores were used to produce filter aids which satisfy the U.S. Food Chemical Codex.1 Perlite ore is composed principally of aluminum silicate, with a combined water content of approximately 3%.
Low-cost body-powered prosthesis for transfemoral amputation
Published in Journal of Medical Engineering & Technology, 2023
Obinna P. Fidelis, Ayomide P. Arowolo
The foot (shown in Figure 9) was created using a shaping stencil to trace the foot on perlite, a jig saw to cut out the design, a little tracing with blade to get the required accuracy, and a grinding machine to provide a smooth finish. Perlite is a glassy volcanic rock capable of expanding to many times its volume when heated quickly. It has wide range of industrial applications including its suitability for making concrete and plaster. Perlite is also employed in horticulture as well as the animal feed industry [14,15,16] and employed in this study to make a prosthetic foot. The mid-proximal region of the foot was chopped in half to accommodate the metatarsals, and an elastic band was employed to hold the area together with gum, followed by more hammering for fifteen minutes [17]. The foot adapter (Figure 10) was fabricated using Aluminium. It is a light-weight material and supports the alignment of the foot to suit the user’s ambulation.
Effect of additives on properties and microstructure of lightweight aggregates produced from MSWI bottom ash sludge
Published in Journal of the Air & Waste Management Association, 2021
Yan Han, Hong Wang, Yueqing Xu, Yun Cao, Peng Gao, Rong Liu
MSWI-BAS was provided by the Nanjing Tianhe Scarlett to Renewable Resources Limited Company, Jiangsu, China. Fly ash was obtained from Nanjing Jinling thermal power plant, Jiangsu, China. There are many vitreous structural materials in fly ash, which have loose surface, large specific surface area, and high activity. Expanded perlite and coal powder were purchased from Xinrun Building Materials Factory, Henan, China. Expanded perlite is a kind of good porous thermal insulation material, which has the characteristics of light weight, heat preservation, and stable chemical properties (Sengul et al. 2011). Coal powder has high carbon content and high combustion calorific value and is a good flux. Clay is common commercial clay. Water glass is ordinary commercially available analytical water glass.
Lightweight aggregate obtained from municipal solid waste incineration bottom ash sludge (MSWI-BAS) and its characteristics affected by single factor of sintering mechanism
Published in Journal of the Air & Waste Management Association, 2020
Yan Han, Yun Cao, Hong Wang, Yueqing Xu, Rong Liu, Yifan Xu, Yong Zhang, Xihong Yang
MSWI-BAS used in this study was collected from the Nanjing Tianhe Scarlett to Renewable Resources Limited Company, Jiangsu, China. The company used the incinerated bottom ash slag after screening, magnetic separation, water washing and other pretreatments for the production of building concrete-unburned bricks. During this process, a certain amount of ash sludge would be produced. This part of the ash sludge had a high water content and a small particle size which was an urgent problem to be solved. Fly ash was obtained from Nanjing Jinling thermal power plant, Jiangsu, China. Because it has a lot of vitreous structure, loose surface, large specific surface area and high activity, it is used as a mixed raw material together with MSWI-BAS. Clay and expanded perlite were provided by Nanjing Normal University. Perlite is a good porous insulation material with light weight, heat preservation and chemical stability.