US5489326A - Gold recovery using controlled oxygen ...

A process for recovering gold from a refractory auriferous ore containing sulfide sulfur. An aqueous slurry of refractory auriferous ore is subjected to pressure oxidation in an autoclave while the distribution of oxygen to the various compartments of the autoclave is controlled in order to achieve increased oxygen utilization.

Titanium Internals in Refractory Lined Pressure Oxidation ...

Titanium Internals in Refractory Lined Pressure Oxidation Autoclaves Author: Franceschini, M Author: Ugarenko, C Hatch Ltd. - Autoclave Technology, Sr. Piping Engineer Hatch Ltd. - Autoclave Technology, Welding Technologist Co-Author: Gothard, S

PRESSURE OXIDATION OF PYRITE-ARSENOPYRITE REFRACTORY GOLD ...

Pressure oxidation of pyrite-arsenopyrite refractory gold concentrate 103 Autoclave oxidation tests were conducted in Büchi ecoclave model 075 titanium

Pressure-oxidation autoclave as an analogue for acid ...

The oxidation step is conducted on ore concentrate slurry in an autoclave at 225°C and 3,800 kPa oxygen gas pressure with continuous feed. The slurry takes ca. 1 h to pass through the autoclave, during which time the sulphides are almost completely oxidised.

Pressure oxidation overview - ScienceDirect

3 Acidic Pressure Oxidation – Whole Ore, 4 Alkaline Pressure Oxidation – Whole Ore, 5 Acid and Alkaline Autoclave – Comparison, 6 Acidic Pressure Oxidation – Concentrate discuss the major features of these processes, with Section 5 providing a comparison of the acidic vs. alkaline options for whole-ore processing:

Stabilization of supersonic vent gas from autoclave ...

STABILIZATION OF SUPERSONIC VENT GAS FROM AUTOCLAVE PRESSURE OXIDATION 79 Introduction This paper presents the results of computational fluid dynamics (CFD) and finite element

Macraes Operation - OceanaGold

Macraes and Reefton were prepared by, or under the supervision of, K Madambi. ... (pressure oxidation and CIL) 95%, with overall at 81% 80 staff: 4 operating crews with in house maint. ... Pressure oxidation autoclave (30 bar and 220ºC) was commissioned in 1999 Recovery improvement realised was approximately 10% overall

Pressure Oxidation | Mining | SGS

Pressure oxidation (POX), high pressure oxidation (HiPOX) and ACTIVOX autoclave leaching are viable industry-standard technologies used to recover gold and other accessory metals. The process is particularly well suited for treating refractory gold ores, which give low recovery when directly leached with cyanide.

autoclave gold recovery plant - BINQ Mining

The Goldstrike Autoclave Plant Design, Commissioning And Operation … plant is designed for the pressure oxidation of 1363 t/d (1500 stpd) of refractory gold ore. … design of the splash/flash system of heat recovery and the control systems.

Deportment of gold in an autoclave pressure oxidation (AC ...

Request for analysis: A carbonaceous refractory sulphide ore is processed in an autoclave pressure oxidation plant and subsequently subjected to a cyanide leaching.

IMPLEMENTATION OF SAFETY INSTRUMENTED SYSTEMS IN PRESSURE ...

IMPLEMENTATION OF SAFETY INSTRUMENTED SYSTEMS IN PRESSURE OXIDATION FACILITIES *M. Pearson, W. McCombe, L. Gonzalez-Sardi Hatch Sheridan Science & Technology Park

Pressure Oxidation Autoclaves | Pressure Autoclaves ...

Eaton Metal Products is the premier North American fabricator of pressure oxidation Autoclaves! With lift capacity at 550 tons, we handle these very large, extremely heavy vessels with ease. Our expertise with the specialty alloys, typically required in these vessels, has proven an invaluable asset to our extensive & ever expanding customer base.

Pressure Oxidation Autoclaves | Pressure Autoclaves ...

Eaton Metal Products is the premier North American fabricator of pressure oxidation Autoclaves! With lift capacity at 550 tons, we handle these very large, extremely heavy vessels with ease. Our expertise with the specialty alloys, typically required in these vessels, has proven an invaluable asset to our extensive & ever expanding customer base.

Autoclave (industrial) - Wikipedia

Industrial autoclaves are pressure vessels used to process parts and materials which require exposure to elevated pressure and temperature. The manufacture of high-performance components from advanced composites often requires autoclave processing.

Autoclave Standard Operating Procedure - NDSU

Autoclave Standard Operating Procedure Purpose: The purpose of this standard operating procedure ... autoclave that is not operating correctly (if a positive biological indicator is generated during testing of ... chamber pressure is 15-16 psi. However, this pressure is dependent upon altitude. At

autoclaves - an overview | ScienceDirect Topics

3.5 Pressure Oxidation This technique uses autoclave leaching with pure air/oxygen, high pressure, and temperature for the treatment of refractory carbonaceous ore treatment ( Sibrell, 1991; Schmitz et al., 2001b ).

Pressure Oxidation Autoclaves | Pressure Autoclaves ...

Eaton Metal Products is the premier North American fabricator of pressure oxidation Autoclaves! With lift capacity at 550 tons, we handle these very large, extremely heavy vessels with ease. Our expertise with the specialty alloys, typically required in these vessels, has proven an invaluable asset to our extensive & ever expanding customer base.

Pressure Oxidation | Mining | SGS

Pressure oxidation (POX), high pressure oxidation (HiPOX) and ACTIVOX autoclave leaching are viable industry-standard technologies used to recover gold and other accessory metals. The process is particularly well suited for treating refractory gold ores, which give low recovery when directly leached with cyanide.

Stabilization of supersonic vent gas from autoclave ...

STABILIZATION OF SUPERSONIC VENT GAS FROM AUTOCLAVE PRESSURE OXIDATION 79 Introduction This paper presents the results of computational fluid dynamics (CFD) and finite element

WO2015086909A1 - Autoclave for pressure oxidation - Google ...

The present invention relates to TiN coated autoclaves for pressure oxidation of slurried ores and concentrates and provides an autoclave for pressure oxidation of slurried ores and/or concentrates comprising a main shell having an interior layer composed of titanium or titanium alloy having a TiN layer on its surface, the TiN layer coming into contact with the slurried ores/or concentrates ...

Basic Iron Sulphate in Pressure Oxidation Processing

oxidation or pressure oxidation . processes, in which the sulphide ... oxidation of sulphides in an autoclave is typically 5 to 10% better than after oxidation in a roaster. The extent and distribution of the ... Basic Iron Sulphate in Pressure Oxidation Processing ...

Valves for Autoclave Processes - Mogas

Valves for Autoclave Processes. Continued research and development programs, solid proven designs and ... Pressure leaching and oxidation are two of the most demanding extraction methods in the mining industry and require dependable, time-tested severe service valves and coatings. Whether

Types of Pressure Oxidation Autoclave Lining

As shown in Figure 1, there are other accessory vessels (splash and flash towers) in the autoclave circuits, that are also brickwork lined. The linings used to date, other than small test sections, have all been acid-resistant fireclay bricks, bonded with alkali silicate mortar, PbO-based mortar, and/or vinyl ester mortar, but mainly alkali silicate mortar.

Pressure oxidation overview - ScienceDirect

3 Acidic Pressure Oxidation – Whole Ore, 4 Alkaline Pressure Oxidation – Whole Ore, 5 Acid and Alkaline Autoclave – Comparison, 6 Acidic Pressure Oxidation – Concentrate discuss the major features of these processes, with Section 5 providing a comparison of the acidic vs. alkaline options for whole-ore processing:

High Pressure Acid Leach & Pressure Oxidation

High Pressure Acid Leach & Pressure Oxidation RIGHT SOLUTIONS | RIGHT PARTNER ... in bench scale autoclaves to evaluate and optimise the various conditions necessary for pilot scale HPAL campaigns leading to the design, construction and commissioning of full scale process plants. ... Non-acidic pressure oxidation techniques such as alkaline ...