sodium sulfate ore concentrating

Sustainable and efficient recovery of lithium from sodium sulfate …

(1) Crushed α-spodumene is calcined at 950 ∼ 1100 °C and transformed into β- spodumene; (2) Roasting with sulfuric acid at 250 ∼ 300 °C; (3) Water leaching and removal of impurities such as Fe, Al, Ca, Mg (4) Concentration of lithium sulfate solution by forced evaporation;(5) Adding the corresponding amount of sodium hydroxide and ...

Kinetics study on non-isothermal carbothermic reduction of …

Sodium sulfate has proven to be an effective additive for enhancing the reduction and metal aggregation during the carbothermic reduction of Ni laterite ore. In this study, the effect of Na 2 SO 4 on the non-isothermal reduction kinetics of Ni laterite ore with solid C was investigated. The kinetic parameters and mechanism function were …

The effect of sodium sulphate on the hydrogen reduction …

2.4. Reduction process and magnetic separation. The reduction of the prepared nickel laterite ore (PM or IM) with a combined mass of 1 kg was performed in a stirred fluidised-bed reactor, which is a laboratory constructed, cylindrical heat-resistant stainless steel reactor.In a typical reduction process, the effect of different parameters …

Lithium Extraction from Spodumene Ore

The precipitated sodium sulfate is recovered using another rotary vacuum filter (P-28), and the cake is dried using a second rotary drier (P- 29) . Th is dried material is sold as a co-product.

Mining method of sodium sulphate ore

The invention relates to a mining method of sodium sulphate ore. The method comprises the following steps of: firstly, selecting ore body; secondly, excavating a brine ditch: a plurality of brine ditches are excavated on the ore body, and the distance between each two ditches is 8 meters; thirdly, buffering and dissolving brine; fourthly, adjusting and …

Roasting and Leaching Behavior of Nickel Laterite Ore

The success of the sulfation-roasting-leaching process depends on iron behavior. Due to its higher amount, it is sulfated before nickel. However, the stability of iron sulfates is lower than the nickel sulfate and during the decomposition of iron sulfate, the sulfur trioxide (SO 3) is liberated and reacts with nickel to form nickel sulfate.This …

Simulation of a triple effect evaporator of a …

@article{VazquezRojas2018SimulationOA, title={Simulation of a triple effect evaporator of a solution of caustic soda, sodium chloride, and sodium sulfate using Aspen Plus}, author={Raul A. Vazquez-Rojas and …

Studies on Reduction Characteristics of Limonite and Effect of Sodium

Limonite ore is from Torobulu, Southeast Sulawesi. In the first step, limonite, sodium sulphate, and graphite were sieved by a shaker sieve until reaching a size of 100 mesh, which is the optimal size for laterite [] and were weighed for 50 g for limonite and mixed with 5, 10, and 15% Na 2 SO 4 and the variation of stoichiometry calculation …

Sulfation Roasting of Nickel Oxide–Sulfide Mixed Ore …

ore, such as sulfide [31], sodium sulfate [32], ferric sulfate [33], and ammonium sulfate [34]. As a potentially more economic and green metallurgical process, ammonium …

Study of electrodialysis concentration process of

The concentration of sodium sulfate almost reaches its solubility at 25 °C (1.96 M) which is the reason why at high current densities its concentration is lower that the concentration of the nitric acid. ... Effect of concentration polarization on electrodialytic concentrating of dilute NaCl and NH4NO3 solutions. Russ. J. Electrochem., 49 ...

A clean and efficient innovative technology for

(a)∼(b)-The XRD patterns of pyrite concentrate and sulfide gold ore; (c)-Chemical phase analysis of gold in sulfide gold ore; (d)∼(e)-The Surface microstructure and map scanning of pyrite concentrate and sulfide gold ore. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this ...

Influence of Surfactant for Stabilization and Pipeline …

Various kinds of surfactant and polymers such as sodium hexametaphosphate, cetyltrimethyl ammonium bromide (CTAB), Sapindus laurifolia, and sodium dodecyl sulfate (SDS) have been developed by …

Hard Rock Spodumene Lithium Processing | Saltworks …

In step 1, to convert spodumene into lithium sulfate (Li 2 SO 4), the raw ore is crushed and separated both mechanically and via floatation.Next, the concentrate undergoes energy- and chemically intensive hot acid-roasting. This process (as shown in Figure 1 below) sees concentrated spodumene powder roasted at 1050°C, cooled, mixed …

Recent Progress in Hydrometallurgical Processing of Nickel Lateritic Ore

The stainless-steel industry is the primary driver of nickel demand and uses both class 1 and 2 (lower purity) nickel. Class 2 nickel from nickel laterite ores can be converted to nickel sulfate; however, it requires high-pressure acid leaching. Much of the laterite ore comes from the Philippines, Indonesia, and New Caledonia.

Reductive roasting of nickel laterite ore with sodium sulfate …

In Part I, reduction/sulfidation behaviors of a saprolitic laterite ore in the presence of sodium sulfate were investigated, with an emphasis on thermodynamic analysis, selective reduction/sulfidation ratios and kinetics. To separate the interactions between Ni and Fe, chemical titration analysis was adopted to determine the contents of …

EXTRACTING METALS FROM SULFIDE ORES

The recovery of nickel from solution, following leaching of either type of nickel ore, can be achieved by hydrogen reduction, as discussed above, or by electrolysis. Outokumpu uses the latter technology in Finland. Nickel is deposited from nickel sulfate solutions (~60 grams/liter nickel) containing sodium sulfate and boric acid to improve the ...

Phase transformation and roasting kinetics of cobalt-rich …

The contents of main elements Cu, Co and S in minerals are 23.56 %, 6.31 % and 26.10 %, respectively. Sodium sulfate used in the experiment is analytical grade. Download : Download high-res image (497KB) Download : Download full-size image; ... In the roasting process of copper and cobalt ore with sodium sulfate added, sodium …

Reductive roasting of nickel laterite ore with sodium sulphate …

ABSTRACT. In Part II, the correlation between Fe–Ni grain growth and characteristic fusion temperatures of the Na 2 SO 4 –laterite mixtures, and phase transformations of the reduced pellets were investigated. For the mechanism of sodium sulphate, Na + is able to liberate the hosted nickel and iron within lizardite, while SO 4 2– is the sulphur source for the …

Efficient Synchronous Extraction of Nickel, Copper, …

The mechanism of sodium sulfate revealing that sodium sulfate plays a prominent role in the sulfation roasting of complicated polymetallic sulfide ores. Experiments Sulfation...

Sodium sulfate activation mechanism on co-sulfating …

A controlled two-stage roasting and water leaching process was used to extract valuable metals from Chinese copper-nickel sulfide concentrate. Using an ammonium …

Lime use and functionality in sulphide mineral flotation: A …

Highlights. •. Lime plays a critical role in flotation by controlling pulp chemistry and collector adsorption. •. Lime is the most economical and commonly used reagent for pH control in flotation. •. Ca 2+ ions in lime can enhance depression of minerals and flotation selectivity in a variety of ores. •.

Application of nanofiltration for concentration of sodium sulfate …

Sodium sulfate crystallization can be induced in a separate crystallizer outside of the membrane unit by addition of crystal seeds. NF270 is a suitable membrane for this application and is ...

Sustainable and efficient recovery of lithium from sodium sulfate …

The lithium sulfate causticization method to prepare lithium hydroxide has the advantages of a simple and mature process, while the shortcoming of this method is also obvious such as high energy consumption and low lithium yield (Wang et al., 2021).The most serious step of lithium loss is the freezing process, the reaction equation is as …

Thermochemical analysis of laterite ore alkali roasting: …

Production of nickel from laterites typically requires a pre-concentration step which breaks down the mineral crystalline structure, thereby facilitating the subsequent extraction of the valuable metals. This work discusses the thermochemical analysis of the alkali roasting of an Indonesian saprolite ore using Na 2 CO 3, Na 2 SO 4, and NaOH ...

Case study flowsheets: copper–gold concentrate treatment

Pressure oxidation of chalcocite/pyrite ore or bulk concentrate in an iron-sulfate-rich electrolyte: PLATSOL ® process: P: 220–230: 30–40: 15: Total pressure oxidation in the presence of 10–20 g/l NaCl. Precious metals leached at the same time as base metalsOxiana Sepon: P and soon C: 80: copper: Atm: 100: Atmospheric ferric leach …

Sodium Sulfate

Follow the directions on your prescription label carefully. The Sodium Sulfate dose your doctor recommends will be based on the following (use any or all that apply): the condition being treated. other medical conditions you have. other medications you are taking. how you respond to this medication. your weight.

Reductive Roasting of Nickel Laterite Ore with Sodium Sulfate …

There are also some compounds containing sulfur that used as an additive, such as pyrite (Fe 2 S) [22], sodium sulfate (Na 2 SO 4 ) [13,14,[23][24] [25], sodium sulfide (Na 2 S) [14], and calcium ...

Electrodialysis to Concentrate Lithium from Lithium …

sodium sulfate, and when it was added in a volume ratio of 0.4, lithium was not lost. Using a solution ... The amount of lithium in saltwater is about twice as large as that in ore, and many studies have been conducted on recovering lithium from brine [6–10]. ... methods of concentrating target components using ED. HVRC is a method of ...

Beneficiation of nickeliferous laterite by reduction roasting in …

The laterite ore was crushed and ground to 80 wt.% passing 0.074 mm.The ground laterite sample was thoroughly mixed with sodium sulfate (the amount of sodium sulfate addition varied from 0 wt.% to 20 wt.%) for preparing non-coal-burdened pellets with diameter of 12–16 mm. Lignite was crushed and screened to a size range of 0.5–2.0 mm …

Understanding the effect of sulphate in mining …

open access. Highlights. •. Effect of sulphate was investigated on copper-molybdenum and copper-zinc ores. •. Sulphate ions depress molybdenite recovery and …