No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
The Development and Research Progress of Titanium Gypsum Exploitation and Utilization[J]. Multipurpose Utilization of Mineral Resources, 2020, (3): 28-32. doi: 10.3969/j.issn.1000-6532.2020.03.005. Citation: Jin Biqiang, Zhang Tingting, Zhu Jingping, He Kehan, Liu Hong. The Development and Research Progress of Titanium Gypsum Exploitation …
The acidic wastewater and red gypsum generated by the titanium dioxide (TiO 2) industry pose a great threat to humans and the environment.In order to achieve low-cost and high-benefit resource utilization of acidic wastewater and red gypsum, a harmless process for the self-treatment of acidic wastewater and red gypsum as well as for the recovery of valuable …
Titanium gypsum: it is taken from the storage yard newly built by Shandong Jinhong Titanium-White Chemical co., LTD in 2017. Its main composition is CaSO 4 ·2H 2 O, with a pH value …
Highlights Data analysis revealed that an appropriate amount of BPG can enhance the mechanical properties of cementitious materials, with compressive strength increasing by …
Titanium gypsum (TG) is rarely used to produce α-hemihydrate gypsum (α-HH) because of its poor crystallinity and high impurity and moisture contents. ... Near a pH of 8, the solubilities as a ...
In order to solve the defect of transverse cracks in cement stabilized macadam base, expansive body is produced to compensate cracks by the interaction of titanium gypsum and fly ash. We carry out road performance tests in four aspects: unconfined compressive strength, dynamic modulus of resilience, fatigue test, and small-scale full-scale test.
In this work, titanium gypsum (TG) was applied at two levels (TG-L: 0.15% and TG-H: 0.30%) to simultaneously reduce the uptake of cadmium (Cd), lead (Pb) and arsenic (As) in …
The leachate can be reused twice, and the obtained gypsum was calcined at 200℃ to obtain anhydrite. 99.45% V and 99.98% Ti were extracted in leachate by two-stage countercurrent extraction with 25% P507 at an equilibrium pH of 1.6. 99.86% of the Fe in the raffinate can be recovered by the precipitation method.
It was found that under the conditions of a citric acid mass fraction of 10%, at a 80 °C leaching temperature, a leaching duration of 80–90 min and a liquid–solid ratio of 8, the …
Titanium gypsum is a kind of industrial waste composed of calcium sulfate dihydrate (CaSO 4 ⋅2 H 2 O), produced in the production of titanium dioxide by sulfuric acid process [1]. Due to the large amount of amorphous iron hydroxide in titanium gypsum, the color is usually red, also called red gypsum. ... After regulating the pH of the ...
Titanium gypsum (TiG), generally deemed as the Class I non-hazardous industrial solid waste, is a kind of industrial by-product gypsum generated from titanium oxide (TiO 2) production from ilmenite (FeTiO 3) ore using the sulfate process.The primary component of TiG is calcium sulfate dihydrate (CaSO 4 ·2H 2 O), but it also has a significant amount of amorphous …
The PH value of titanium gypsum was 7.42 by pH test following the Test Methods of Soils for Highway Engineering (JTG 3430-2020). The chemical composition of TG was determined by X-ray fluorescence (XRF) as …
Titanium gypsum was acidic (6.68) with CaO content of 31.29%. The biochar had a characterized high porosity structure with pH of 5.16. In conclusion, these parameters …
They compared the application of Titanium gypsum (TG) with a control and observed decreased bioavailability of Cd, Pb, and As with the application of TG during the tillering stage. ... By raising soil pH, gypsum creates conditions less favorable for denitrification, thereby potentially decreasing N 2 O emissions (Velthof et al. 2002).
Note that the pH value of slag based gypsum was 8.5. Under high pH, cation exchange sites displaced into the solution, leading to an increase in soil pH. Fig. 9 (b) showed that increasing the content of industrial by-product gypsum reduced the pH value of acidic soil. This improvement was achieved by the neutralization reaction of alkaline ...
Utilization and disposal of titanium gypsum (TiG) have led to growing public concern. In this study, we proposed a novel scheme that could transform TiG to efficient adsorbents for phosphate (P ...
As an industrial by-product of flue gas desulfurization, flue gas desulfurization gypsum (FGD gypsum), whose main component is CaSO 4 · 2H 2 O, is an ideal raw material for mineralization.
The phosphorus gypsum, titanium gypsum and FGD gyp- sum used in the experiment were collected from a phosphate fertilizer plant, titanium powder plant and thermal power
In this work, titanium gypsum (TG) was applied at two levels (TG-L: 0.15% and TG-H: 0.30%) to simultaneously reduce the uptake of cadmium (Cd), lead (Pb) and arsenic (As) in rice grown in heavy metal contaminated paddy soils. ... The results showed that the addition of TG significantly decreased the pH and dissolved organic carbon (DOC) in the ...
Titanium gypsum: it is taken from the storage yard newly built by Shandong Jinhong Titanium-White Chemical co., LTD in 2017. Its main composition is CaSO 4 ·2H 2 O, with a pH value near the neutral and a moisture content of about 20%, red and yellow, with a pungent smell. Pre-treatment of titanium-gypsum: the titanium gypsum
In this study, the effect of citric acid on iron leaching from titanium gypsum (TiG) was systematically investigated. The conditions for the leaching of valuable metals were optimized while varying such parameters as the leaching time, citric acid mass fraction, leaching temperature, and the liquid–solid ratio. It was found that under the conditions of a citric acid …
The PH value of titanium gypsum was 7.42 by pH test following the Test Methods of Soils for Highway Engineering (JTG 3430-2020). The chemical composition of TG was determined by X-ray fluorescence ...
The phosphorus gypsum, titanium gypsum and FGD gypsum used in the experiment were collected from a phosphate fertilizer plant, titanium powder plant and thermal power plant, respectively. All samples were dried in a 328 K oven for 19 h before the experiment and were then screened with a 200 mesh for subsequent use.
The pot experiment proved that the indicators of indicating soil salinity such as pH, EC, SAR, and soluble Na+ decreased by 20.74%, 77.24%, 68.77%, and 44.70%, respectively, …
The strong alkalinity of red mud and the heavy metals it contains pose a serious threat to the environment. This study investigated the possibility of applying red mud as a solid waste material in road construction to mitigate the problem of red mud accumulation. Red mud was modified using titanium gypsum and phosphogypsum as curing agents. The effects of …
PH value of titanium gypsum was 7.42 by pH test following the Test Methods of Soils for Highway Engineering (JTG 3430-2020). The chemical composition of TG was determined by X-ray fluorescence...
This study systematically evaluates the effects of titanium slag-flue gas desulfurized gypsum-Portland cement composite (TS-FGD-OPC composite) solidifier on the performance of solidified soils. The evaluation includes assessing the unconfined compressive strength (UCS), elastic modulus, moisture content, and leachate pH value.
the sulfuric acid method. Titanium gypsum was passed through 20-mesh sieves and 100-mesh sieves for use. sulfate (CaSO 4), iron oxide (Fe 2 O 3) and crystal water. And the ratio of CaSO 4 ·2H 2 O/Fe 2 O 3 in titanium gypsum ranges from 7.36 to 10.88. The pH value of the titanium gypsum used in this experiment was 8.55, the Cd
Titanium gypsum contains a wide range of chemical elements that provide nutrients, acts as soil conditioners, reduces the potential for heavy metal leaching, improves the pH of …
2 24 Abstract 25 In situ immobilization of heavy metals in contaminated soils using industrial 26 by-products is an attractive remediation technique. In this work, titanium gypsum (TG) 27 was applied at two levels (TG-L: 0.15% and TG-H: 0.30%) to simultaneously reduce 28 the uptake of cadmium (Cd), lead (Pb) and arsenic (As) in rice grown in heavy metal
