Manufacture of ferric sulphate compounds

A process for the manufacture of ferric sulphate compounds from ferrous sulphate in a closed vessel containing a liquid phase and a vapour phase, the process comprising the oxidation of Fe.sup.++ to Fe.sup.+++ under pressure utilizing commercial oxygen in the closed vessel using NOx as a catalyst where x is a number between 1 and 2 inclusive of 1 and 2 and wherein the process comprises the following reactions:

• ##EQU25## wherein n is any integer greater than or equal to two (2) and y is any integer which is equal to, or greater than zero (0) and less than 3n and wherein the oxidation of Fe.sup.++ is affected by spraying a the liquid phase including a solution containing Fe.sup.++ introduced to the closed vessel, through a reacting cloud comprising NO, NO.sub.2 and O.sub.2 enclosed in the vapour space of the closed vessel and substantially only Ferric ion relative to the amounts of Ferric and Ferrous ions is present in the liquid phase in the closed vessel during the addition of FeSO.sub.4.

A process for the manufacture of ferric sulphate compounds from ferrous sulphate in a closed vessel containing a liquid phase and a vapour phase, the process comprising the oxidation between about 70.degree. C. to about 150.degree. C. of Fe.sup.++ to Fe.sup.+++ under pressure utilizing commercial oxygen in the closed vessel using NOx as a catalyst where x is a number between 1 and 2 inclusive of 1 and 2 and wherein the process comprises the following reactions:

• ##EQU28## wherein n is any integer greater than or equal to two (2) and y is any integer which is equal to, or greater than zero (0) and less than 3n and wherein the oxidation of Fe.sup.++ is affected by spraying a solution containing Fe.sup.++ through a reacting cloud comprising NO, NO.sub.2 and O.sub.2 enclosed in the vapour space of the closed vessel and wherein the liquid phase fills at least 1/3 of the vessel and substantially only ##EQU29## is present in the liquid phase in the closed vessel prior to the addition of FeSO.sub.4 and wherein the liquid phase is sprayed through the vapour phase.

A process for the manufacture of ferric sulphate compounds from ferrous sulphate in a closed vessel containing a liquid phase and a vapour phase, the process comprising the oxidation between about 70.degree. C. to about 150.degree. C. of Fe.sup.++ to Fe.sup.+++ under pressure utilizing commercial oxygen in the closed vessel using NOx as a catalyst where x is a number between 1 and 2 inclusive of 1 and 2 and wherein the process comprises the following reactions:

• ##EQU32## wherein n is any integer greater than or equal to two (2) and y is any integer which is equal to, or greater than zero (0) and less than 3n and wherein the oxidation of Fe.sup.++ is affected by spraying a solution containing Fe.sup.++ through a reacting cloud comprising NO, NO.sub.2 and O.sub.2 enclosed in the vapour space of the closed vessel and wherein the liquid phase fills at least 1/3 of the vessel and substantially only ##EQU33## is present in the liquid phase in the closed vessel during the addition of FeSO.sub.4 and wherein the liquid phase is sprayed through the vapour phase.