Phosphogypsum PG waste is a by product generated from wet process phosphoric acid H3PO4 manufacturing during phosphate rock decomposition Worldwide the annual production of PG ranges between 100 and 300 million tons with only a few quantities utilized in several application domains about 15% the unused PG is usually discharged into
Among them the thermal conductivity coefficient is the main key to measure the ability of a material to transfer or restrain heat flows through building insulation materials At the macroscopic level thermal conductivity largely depends on three main factors operating temperature moisture content and density [33 37 42] Other factors are
nation process is to add value to project delivery and to improve efficiency by dealing with the dependencies between project tasks and parties in other words Managing dependen cies between activities [15 20] Coordination factors are considered as the main compo nents of coordination process which affect the performance
Critical Factors Affecting Quality in Building Construction Projects Systematic Review and Meta Analysis Felix K Ernest B Stephen and A C Andrew 2014 Factors affecting quality performance of construction firms in Ghana Evidence from small scale contractors and M König 2017 Recognition of process patterns for
The present comprehensive review aimed to extract the factors affecting the performance assessment of the organization Methods We conducted a comprehensive search in databases including PubMed
The way to successfully upgrade a phosphate ore is based on the full understanding of its mineralogy minerals surface properties minerals distribution and liberation The conception of a treatment process consists of choosing the proper operations with an adequate succession depending on the ore properties Usually froth flotation takes place in
Moreover it may be noted that as in many published studies impurity is the main factor affecting the properties of the plaster [37 38] However there is a lack of clear answers about the form of the impurities and the effect on the properties of gypsum plaster under different calcination temperatures resulting in a wide scale of
In natural environment MPs undergo a series of aging processes mainly including mechanical fragmentation photoaging thermal aging and biodegradation [16 17] The factors that affect the aging of MPs can be divided into two aspects MP properties and environmental factors oxygen pH water conditions and soil composition Fig 1 In
This study examined the influence mechanism of phosphorus impurities in phosphogypsum on the structure and properties of gypsum The influence of four phosphorus impurities namely Ca 3 PO 4 2 CaHPO 4 H 3 PO 4 and Ca H 2 PO 4 2 on the hydration process water retention and mechanical properties of hydroxypropyl methyl cellulose ether
Calcined Gypsum Manufacturing Process 203 Properties of Gypsum 205 Fire Properties 206 manufacturing process as well as the main properties of gypsum and gypsum products re acoustic thermal and other proper states that gypsum product is a building mate
Calcined Gypsum Manufacturing Process 203 Properties of Gypsum 205 Fire Properties 206 manufacturing process as well as the main properties of gypsum and gypsum products re acoustic thermal and other proper states that gypsum product is a building mate
According to the Energy Information Administration s statistics in the 2006 2016 period approximately 42% of the electricity consumed in the was produced by coal combustion Energy Information Administration 2018 The coal combustion process generates various types of residues such as fly ash bottom ash boiler slag flue bed
The low level of production that solar stills typically achieve is the primary drawback associated with solar distillation As a result of this the high freshwater demand cannot be met by solar distillation This study provides an in depth analysis and assessment of all the factors that affect solar distillation performance
At an operating temperature of 56°C the efficiency of the solar cell is decreased by % at 1000 W/m 2 irradiation level without cooling 49 Studies also show that the efficiency is reduced by 69% at 64°C 50 Furthermore efficiency drops to 5% when the module temperature increases from 43 to 47°C indicating the effect of wind speed on
In recent years the rise of the domestic industry has boosted the use and popularity of prefabricated buildings Prefabricated buildings differ significantly from traditional design construction and production models However due to the short development period of prefabricated buildings in China the quality management of these new structures is still not
Titanium gypsum TG is a industrial gypsum produced during the manufacture of titanium dioxide TiO 2 by the sulphuric acid process after neutralisation of the acid waste solution with lime or calcium carbide slag Zapata Carbonell et al 2019 Zhai et al 2020 At present every 1 ton of TiO 2 produced in China generates about 6 ton of TG Ma 2022a Su et
Some studies attempt to explore the project failure factors PFFs believed to affect project success However this specific area of PFFs remains unclear and efforts to reach an agreement on the project failure factors have been rather limited The main objective of this research study is to identify the PFFs that affect building project success and determine their relative importance
The present comprehensive review aimed to extract the factors affecting the performance assessment of the organization Methods We conducted a comprehensive search in databases including PubMed
The prefabricated building manufacturing system is an equipment intensive industry with a high degree of informatization complex production system structure and harsh equipment operation and maintenance conditions Causal Relationship and Importance Analysis of Risk Inducing Factors Affecting Prefabricated Building Design Change 1 Data
Phosphogypsum PG a waste product of the phosphate fertilizer industry is a source of environmental pollution PG can be calcined to form the hemihydrate gypsum β CaSO 4 • 2 O HPG making it a potential substitute to natural gypsum However PG contains large amounts of soluble phosphorus P impurities which pose a serious risk on the soil and
Flue gas desulfurization FGD gypsum is an inevitable industrial solid waste originated from the process of calcium based wet flue gas desulfurization in thermal power plants and some chemical plants in order to reduce the emission of SO 2 pollution gas [1] [2] In China the total product of FGD gypsum has reached 550 million tons by 2016 [4] and the FGD
