MTW European Type Trapezium Mill
Input size:30-50mm
Capacity: 3-50t/h
LM Vertical Roller Mill
Input size:38-65mm
Capacity: 13-70t/h
Raymond Mill
Input size:20-30mm
Capacity: 0.8-9.5t/h
Sand powder vertical mill
Input size:30-55mm
Capacity: 30-900t/h
LUM series superfine vertical roller grinding mill
Input size:10-20mm
Capacity: 5-18t/h
MW Micro Powder Mill
Input size:≤20mm
Capacity: 0.5-12t/h
LM Vertical Slag Mill
Input size:38-65mm
Capacity: 7-100t/h
LM Vertical Coal Mill
Input size:≤50mm
Capacity: 5-100t/h
TGM Trapezium Mill
Input size:25-40mm
Capacity: 3-36t/h
MB5X Pendulum Roller Grinding Mill
Input size:25-55mm
Capacity: 4-100t/h
Straight-Through Centrifugal Mill
Input size:30-40mm
Capacity: 15-45t/h
Phosphorus calcite mine distribution of calcium carbide mud
Sustainable and efficient removal of phosphorus from
2024年11月5日 The findings confirmed the validity of calcium silicate prepared from red mud residue for the phosphorus removal from wastewater, which has the unique advantages in simultaneously solving the industrial solid waste pollution and excessive phosphorus discharge2024年10月25日 A novel technique that couples microbially induced calcite precipitation (MICP) and calcium carbide residue (CCR) is proposed for immobilizing Cd 2+ in contaminated soilBehaviour and mechanism of cadmium immobilization in2017年9月1日 Phosphate (PO 43−) removal on calcite often entails two processes: adsorption and precipitation Separating these two processes is of great importance for assessment of Phosphate adsorption and precipitation on calcite under 2021年9月30日 In this study, 31 P solidstate NMR was used to investigate the mechanisms of phosphate uptake by calcite over wide pH (6–10) and concentration (5 μM – 10 mM) ranges It Phosphate uptake by calcite: Constraints of concentration and
Effect of calcite mud (calcined at 1000 • C)
To use calcite mud waste generated from the paper production process, calcite mud was treated by calcination and then applied as a sorbent agent to remove phosphorus from an aqueous2023年6月30日 In this context, we aimed to evaluate if the addition of phosphate, calcite, biochar, and biosolids are able to immobilize the Cd in a minewaste impacted soil from Brazil How Does the Use of Biochar, Phosphate, Calcite, and2023年7月27日 In this context, we aimed to evaluate if the addition of phosphate, calcite, biochar, and biosolids are able to immobilize the Cd in a minewaste impacted soil from Brazil How Does the Use of Biochar, Phosphate, Calcite, and2020年7月24日 In this paper, we propose an efficient method for the removal of phosphorus in aqueous solutions using the discharged calcite mud Calcite mud mostly contains calcium in the form of calcium oxide (CaO), calcium carbonate Use of Calcite Mud from Paper Factories in
Mechanisms of phosphate retention by calcite: effects of
2013年11月29日 In order to document underlying mechanisms of Mg (II) ion effects on phosphate retention by calcite, specific details of this study address: (1) research on the 2022年4月6日 Based on density functional theory (DTF), this paper optimized the structure of cancrinite, the main component of red mud, modified the cancrinite with sodium dodecyl Adsorption of phosphate by cancrinite in red mud: a first 2024年1月12日 The extensive accumulation of phosphorus slag (PS) not only occupies land but also pollutes the environment In the present study, calcium carbide slag (CS) and desulfurization gypsum (DG) were used to synergistically activate PS, and metakaolin (MK) was added to provide additional Al 2 O 3 for the cementitious system The setting time, pH development, Preparation and characterization of quaternary clinkerfree 2024年2月23日 Herein, activated red mud particles are used as adsorbents for phosphorus adsorption HCl solutions with different concentrations and deionized water are employed for desorption tests, and the desorption mechanism under the following optimal conditions is investigated: HCl concentration = 02 mol/L, desorbent dosage = 015 L/g, desorption Mechanism of Phosphate Desorption from Activated Red Mud
Recycling and utilization of calcium carbide slag
2022年5月1日 Coal is the dominant fuel in China to provide primary energy, and 70% of polyvinyl chloride is produced from coalbased CaC 2CaC 2 reacts with water to produce acetylene and calcium carbide slag (CCS) as a solid waste for polyvinyl chloride production Approximate 40 million tons of dry CCS are generated annually in China, among which only a 2024年10月15日 Nevertheless, the carbonation products were the mixture of calcite and carbide slag when first introducing CO 2 and then adding carbide slag Adding carbide slag into carbonic acidic solution indicates that the carbonation reaction started in acidic condition which the number of Ca 2+ is insufficient and CO 3 2− is the dominates ionOptimizing carbonation reaction parameters of calcium carbide 2024年7月1日 In order to reduce carbon emissions and consume a large amount of lowquality solid waste, CFBFARMCS has been developed by utilising the synergistic effect of circulating fluidised bed fly ash (CFBFA), red mud (RM) and calcium carbide slag (CS)The solidification mechanism of the ternary paste was studied from both macroscopic mechanical properties Optimization of proportions and solidification mechanism of 2006年4月1日 In reaction (1) the Gibbs free energy change is given by (8) Δ G =RT ν ln IAP K sp (HAP) (9) Δ G =2303 RT ν × SI where R is the ideal gas constant, ν is the number of ions in a formula unit of the crystal and T is the absolute temperature Therefore, the SI is related to the Gibbs free energy change, and then a measure of the thermodynamic driving force for the Calciteseeded crystallization of calcium phosphate for phosphorus
Strength development and microstructure of sustainable
2022年11月21日 The increased production of industrial waste accompanies global industrialization The discharge and storage of industrial wastes seriously pollute the natural environment and limit the development of related industries [1]Red mud (RM), also known as bauxite residue, is a category of industrial waste produced from alumina plantsDownloadable! To use calcite mud waste generated from the paper production process, calcite mud was treated by calcination and then applied as a sorbent agent to remove phosphorus from an aqueous solution The pretreatment muds were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, and Xray diffractionUse of Calcite Mud from Paper Factories in Phosphorus TreatmIf the indirect mineral carbonation of red mud can be combined with the transformation of carbide slag into highquality CaCO 3 (allowing for using the slag’s strong alkalinity to adjust the pH of the red mud leaching solution), it minimizes the dependence on caustic soda and fosters highvalue coutilization of red mud and carbide slagIntegration of CO2 sequestration with the resource recovery of red mud 2014年12月1日 Calcite, the mineral constituting marble and limestone, is extremely soluble in acid [1], so acidic rain presents a threat to the many historical structures constructed out of these stones [2]Although a number of treatments have been proposed to protect marble from the damaging effects of acid rain [3], many are deficient in one way or another, be it the excessive Nucleation, growth and evolution of calcium phosphate films on calcite
Synthesis and optimization of green onepart geopolymer from mine
2022年10月24日 Synthesis and optimization of green onepart geopolymer from mine tailings and slag: Calcium carbide residue and soda residue as supplementary alkali sources Most of the mineral phases in the phosphate mine tailings including quartz, Calcite has a relatively smooth surface and may play a lubricating role in OPG mortars, thus a high 2023年5月1日 Calcium carbide slag (CS) is a byproduct of the hydrolysis of calcium carbide to produce acetylene, containing more than 80% calcium hydroxide and thus presents a high alkalinity [23]Its large production volume challenges the disposal of CS, and currently CS is mainly dealt with by pilling and landfilling, which not only occupies a large amount of land Preparation and curing method of red mudcalcium carbide The mechanism of phosphate coprecipitation with calcite is proposed on the basis of homogeneous distribution of phosphate in the crystal at 20°C and pH 7995 At a constant pH, phosphate content of calcite is proportional to total phosphate concentration in aqueous solution PO' ions are uptaken intoCoprecipitation of phosphate with calcite JSTAGE60–70, the retention of phosphorus by calcite and dolomite is mainly attributed to the formation of amorphous calcium phosphate (Ca 3(PO 4) 2, ACP), dibasic calcium phosphate (CaHPO 4$2H 2O Retention of phosphorus on calcite and dolomite
Additivity Effect on Properties of Cemented UltraFine
2024年1月31日 Tailings from gold mines gradually approach ultrafine, making mine backfill costs higher and strength lower, which poses a serious threat to the safety of underground personnel and equipment It is well known that suitable chemical admixtures can enhance the working properties of mortar materials Therefore, in order to achieve the purpose of reducing To control eutrophication and recover phosphate from wastewater, a calcium carbide slag and red mud composite material (CRLDH) was prepared using industrial waste as raw material for phosphorus XRD pattern of calcium carbide slag, red mud, and CRLDH2024年5月21日 Sun et al prepared AAMs by using solid waste white mud (mainly composed of calcium carbonate) produced by the papermaking industry as a filler and GBFS/FA together The results show that the 28 days strength is better than that of OPC slurry even when the content of white mud in the slurry reaches 50%, and it also has better early strengthStudy on the properties of alkaliactivated phosphorus slag 2011年12月5日 Unraveling the kinetics of calcium orthophosphate (CaP) precipitation and dissolution is important for our understanding of the transformation and mobility of dissolved phosphate species in soilsKinetics of Calcium Phosphate Nucleation and Growth on Calcite
CO2 mineralization of carbide slag for the
2021年8月31日 Chinese Journal of Chemical Engineering ›› 2022, Vol 43 ›› Issue (3): 8698 DOI: 101016/jcjche202202011 Previous Articles Next Articles CO 2 mineralization of carbide slag for the production of light calcium carbonates Tongyang Zhang 1, Guanrun Chu 1, Junlin Lyu 1, Yongda Cao 1, Wentao Xu 1, Kui Ma 1, Lei Song 1, Hairong Yue 1,2, Bin Liang 1,22024年9月1日 The rotating gravity bed destroys the calcium carbonate precipitation generated on the surface of red mud by rotating gravity so that the calcium ions can continue to leach The autoclave accelerates the dissolution of the calciumsilica phase in red mud by high temperature and high pressure [125] The glass column reactor mainly relies on Application of red mud in carbon capture, utilization and 2022年4月1日 Cancrinite is the key substance that affects the adsorption effect of phosphate from red mud(RM) Therefore, cancrinite in RM was modified to improve its adsorption performance(PDF) Adsorption of phosphate by cancrinite in 2022年11月1日 From three (3) industrial coproducts, namely blast furnace slag, red mud and calcium carbide residue, sustainable triwaste geopolymers were developed [8] The result of this study showed that a Strength development and microstructure of sustainable
Inhibition of phosphorus sorption on calcite by dairy manure
2017年10月1日 32 P Sorption kinetics321 1% manure solution reactions The 1% manure solutions prepared for each calcite sample provided 0374–0434 mmol L −1 of P (Table 1), which increased the total initial concentrations of P in the Pspiked calcitemanure samples as compared to the Pspiked deionized water calcite samplesThe increase in available P created a slight 2001年3月1日 The adsorption and desorption of phosphate on calcite and aragonite were investigated as a function of temperature (5–45 C)and salinity (0–40) in seawater preequilibrated with CaCO3(PDF) Adsorption and Desorption of Phosphate on Calcite 2021年9月30日 The main challenges are as follows: (i) calcite has a soluble mineral surface involved in dissolution and precipitation processes in solutions; (ii) Ca 2+ and CO 3 2− are released by calcite dissolution and Ca 2+ ions combine with PO 4 3− to form calcium phosphate precipitates, while CO 3 2−, as a Lewis base, has a strong impact on the Phosphate uptake by calcite: Constraints of concentration and To use calcite mud waste generated from the paper production process, calcite mud was treated by calcination and then applied as a sorbent agent to remove phosphorus from an aqueous solutionEffect of calcite mud (calcined at 1000 • C) dosage on phosphorus
Site and speciesspecific contribution of charophytes to calcium
2015年9月23日 Our aim was to test the hypothesis that precipitation of calcite encrustation and accumulation of phosphorus by charophytes depend on both habitat conditions and plant species To do this, we analysed the amount of calcite and phosphorus fractions in six charophyte species from ten lakes of different water chemistry Percent of calcite encrustation in plant biomass 2023年10月19日 Industrial solid wastes red mud and calcium carbide slag are used to prepare lightweight aggregate ceramsite by coldbonded pelletizing technology in this study The effects of mixing water and curing method on the physical properties of ceramsite were investigated, including natural curing (in air at 20 °C), sealed curing, water curing, hot Investigation of various curing methods on the properties of red mud 2024年9月2日 Calcium hydroxide (Ca(OH)2) was used to modify CT (CCT), hoping to fix the heavy metals and phosphate in CT at the same time It was found that the removal capacity of CCT was significantly higher Removal mechanism of phosphorus in water by calcium 2024年1月12日 The extensive accumulation of phosphorus slag (PS) not only occupies land but also pollutes the environment In the present study, calcium carbide slag (CS) and desulfurization gypsum (DG) were used to synergistically activate PS, and metakaolin (MK) was added to provide additional Al 2 O 3 for the cementitious system The setting time, pH development, Preparation and characterization of quaternary clinkerfree
Mechanism of Phosphate Desorption from Activated Red Mud
2024年2月23日 Herein, activated red mud particles are used as adsorbents for phosphorus adsorption HCl solutions with different concentrations and deionized water are employed for desorption tests, and the desorption mechanism under the following optimal conditions is investigated: HCl concentration = 02 mol/L, desorbent dosage = 015 L/g, desorption 2022年5月1日 Coal is the dominant fuel in China to provide primary energy, and 70% of polyvinyl chloride is produced from coalbased CaC 2CaC 2 reacts with water to produce acetylene and calcium carbide slag (CCS) as a solid waste for polyvinyl chloride production Approximate 40 million tons of dry CCS are generated annually in China, among which only a Recycling and utilization of calcium carbide slag2024年10月15日 Nevertheless, the carbonation products were the mixture of calcite and carbide slag when first introducing CO 2 and then adding carbide slag Adding carbide slag into carbonic acidic solution indicates that the carbonation reaction started in acidic condition which the number of Ca 2+ is insufficient and CO 3 2− is the dominates ionOptimizing carbonation reaction parameters of calcium carbide 2024年7月1日 In order to reduce carbon emissions and consume a large amount of lowquality solid waste, CFBFARMCS has been developed by utilising the synergistic effect of circulating fluidised bed fly ash (CFBFA), red mud (RM) and calcium carbide slag (CS)The solidification mechanism of the ternary paste was studied from both macroscopic mechanical properties Optimization of proportions and solidification mechanism of
Calciteseeded crystallization of calcium phosphate for phosphorus
2006年4月1日 In reaction (1) the Gibbs free energy change is given by (8) Δ G =RT ν ln IAP K sp (HAP) (9) Δ G =2303 RT ν × SI where R is the ideal gas constant, ν is the number of ions in a formula unit of the crystal and T is the absolute temperature Therefore, the SI is related to the Gibbs free energy change, and then a measure of the thermodynamic driving force for the 2022年11月21日 The increased production of industrial waste accompanies global industrialization The discharge and storage of industrial wastes seriously pollute the natural environment and limit the development of related industries [1]Red mud (RM), also known as bauxite residue, is a category of industrial waste produced from alumina plantsStrength development and microstructure of sustainable Downloadable! To use calcite mud waste generated from the paper production process, calcite mud was treated by calcination and then applied as a sorbent agent to remove phosphorus from an aqueous solution The pretreatment muds were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, and Xray diffractionUse of Calcite Mud from Paper Factories in Phosphorus TreatmIf the indirect mineral carbonation of red mud can be combined with the transformation of carbide slag into highquality CaCO 3 (allowing for using the slag’s strong alkalinity to adjust the pH of the red mud leaching solution), it minimizes the dependence on caustic soda and fosters highvalue coutilization of red mud and carbide slagIntegration of CO2 sequestration with the resource recovery of red mud