Process for recovery of nickel and magnesium from a naturally occuring material

Recovery of nickel@ and magnesium@ from natural substances

Ni and Mg are recovered from natural Ni and Mg-contg. substances by a process in which a spent catalyst based on Fe and with a S content of at least 10 wt.% is mixed in a ratio of 1:2-8:1 with the natural material, contg. at least 0.1 wt.% each of Ni and Mg. A suspension with a pH of at most 4 is formed with water and is subjected to a pressure of 13.79-41.37 bar and temp. of 50-350 deg. C. An oxidn. agent is injected to give a homogeneous distribution of components.

PROCESS FOR RECOVERY OF NICKEL AND MAGNESIUM FROM A NATURALLY OCCURRING MATERIAL

A process is disclosed for recovering nickel and magnesium form natural materials by extracting them in the presence of a spent sulfur containing iron based hydroconversion catalyst, under oxidative conditions.

Verfahren zur Herstellung eines vanadiumhaltigen Agglomerates bzw. einer vanadiumhaltigen Stahllegierung sowie vanadiumhaltiges Agglomerat dafür

PROCESS FOR THE PRODUCTION OF VANADIUM CONTAINING STEEL ALLOYS

A process for production of vanadium-containing agglomerate, includes the steps of providing a spent, vanadium-containing, iron based hydroconversion catalyst; incinerating the spent catalyst in the presence of an oxidizer until a sulfur content of the spent catalyst is reduced to 2% or less by weight; grinding the spent catalyst to a particle size suitable for a desired use; and mixing the spent catalyst with an iron mineral and a binder to form a vanadium-containing agglomerate; and pyroconsolidating the vanadium-containing agglomerate. Agglomerates so obtained exhibit a solid solution structure of ferric oxide and vanadium pentoxide. A process for production of vanadium-containing steel alloys from such agglomerates includes the steps of: reducing the vanadium-containing agglomerate; mixing the reduced vanadium-containing agglomerate with a standard reduced iron agglomerate to obtain a mixed reduced agglomerate; and melting the mixed reduced agglomerate under reducing conditions to obtain a vanadium-containing steel alloy.

Verfahren zur Herstellung eines vanadiumhaltigen Agglomerates bzw. einer vanadiumhaltigen Stahllegierung

Process for the Production of Vanadium Containing Steel Alloys

Vanadium-containing iron oxide agglomerates

A vanadium-containing agglomerate for use in manufacturing steel alloys, comprising a distorted structure of iron oxide matrix having vanadium within the matrix as a solid solution of ferric oxide and vanadium pentoxide and having a chemical composition (wt.%) as follows: Fe 40 - 70 V 0.01 - 10 Ni 0.01 - 2 l ...

A process for the production of vanadium-containing agglomerates and steel alloys

A process for the production of vanadium-containing agglomerates and steel alloys

A process for production of vanadium-containing agglomerate, includes the steps of providing a spent, vanadium-containing, iron based hydroconversion catalyst; incinerating the spent catalyst in the presence of an oxidizer until a sulfur content of the spent catalyst is reduced to 2% or less by weight; grinding the spent catalyst to a particle size suitable for a desired use; and mixing the spent catalyst with an iron mineral and a binder to form a vanadium-containing agglomerate; and pyroconsolidating the vanadium-containing agglomerate. Agglomerates so obtained exhibit a solid solution structure of ferric oxide and vanadium pentoxide. A process for production of vanadium-containing steel alloys from such agglomerates includes the steps of: reducing the vanadium-containing agglomerate; mixing the reduced vanadium-containing agglomerate with a standard reduced iron agglomerate to obtain a mixed reduced agglomerate; and melting the mixed reduced agglomerate under reducing conditions to obtain ...

Vanadium-containing monoxide aggregates

PRODUCTION OF VANADIUM-CONTAINING AGGLOMERATE AND VANADIUM-CONTAINING STEEL ALLOY

PURPOSE: To produce a vanadium-contg. agglomerate from a spent hydroconversion catalyst and to produce a vanadium-contg. steel by treating the same. CONSTITUTION: The spent vanadium-contg. hydroconversion catalyst consisting essentially of iron is incinerated in the pressure of an oxidizer until the sulfur content of the spent catalyst falls down to ≤2 wt.%. The catalyst is then ground to a grain size meeting a desired application. Further, the used catalyst and an iron are and a binder are mixed to form the vanadium-contg. agglomerate, which is then subjected to pyroconsolidating. The resulted agglomerate has a structure corresponding to a solid soln. composed of ferric oxide and vanadium pentoxide. Further, the vanadium-contg. agglomerate is reduced to form a reduced vanadium-contg. agglomerate, which is then mixed with a standard reduced iron agglomerate to obtain a mixed and reduced agglomerate. This mixed and reduced agglomerate is melted in a reduced state, by which the vanadium- ...

Process for the production of an agglomerated vanadium containing agglomerate according to that obtained and method of using this agglomerate for the manufacture of alloy steels.

L'invention concerne un procédé pour la production d'un aggloméré contenant du vanadium, l'aggloméré ainsi obtenu et l'utilisation de cet aggloméré pour la fabrication d'aciers alliés. Le problème à résoudre consiste à créer un procédé économique et favorable à l'environnement. Le procédé est caractérisé en ce qu'on incinère (2) en présence d'un oxydant un catalyseur d'hydrogénation épuisé à base de fer contenant du vanadium pour réduire sa teneur en soufre à 2% ou moins, on broie le produit, on le mélange (3 à 5) avec un minéral ferreux et un liant puis on le consolide par la chaleur (6). L'invention est applicable à la fabrication des aciers alliés contenant du vanadium. The invention relates to a process for the production of an agglomerate containing vanadium, the agglomerate thus obtained and to the use of this agglomerate for the manufacture of alloy steels. The problem to be solved is to create an economical and environmentally friendly process. The process is characterized by incinerating (2) in the presence of an oxidant a spent iron-based hydrogenation catalyst containing vanadium to reduce its sulfur content to 2% or less, crushing the product, mixing (3 to 5) with a ferrous mineral and a binder and then consolidating it by heat (6). The invention is applicable to the manufacture of alloy steels containing vanadium.

Process for the production of vanadium-containing steel alloys

A process for production of vanadium-containing agglomerate, includes the steps of providing a spent, vanadium-containing, iron based hydroconversion catalyst; incinerating the spent catalyst in the presence of an oxidizer until a sulfur content of the spent catalyst is reduced to 2% or less by weight; grinding the spent catalyst to a particle size suitable for a desired use; and mixing the spent catalyst with an iron mineral and a binder to form a vanadium-containing agglomerate; and pyroconsolidating the vanadium-containing agglomerate. Agglomerates so obtained exhibit a solid solution structure of ferric oxide and vanadium pentoxide. A process for production of vanadium-containing steel alloys from such agglomerates includes the steps of: reducing the vanadium-containing agglomerate; mixing the reduced vanadium-containing agglomerate with a standard reduced iron agglomerate to obtain a mixed reduced agglomerate; and melting the mixed reduced agglomerate under reducing conditions to obtain a vanadium-containing steel alloy.