Process for production of ferric sulphate from copper slag for arsenic removal

1.

Title of Product/Design/Equipment

Process for production of ferric sulphate from copper slag for arsenic removal

2.

IPR Status

Patent/Abroad IPR Details

3.

Application/Uses

Find number of applications such as (i) oxidant for removal of arsenic, (ii) water treatment (iii) production of pigment, etc.

4.

Salient Technical Features including Competing Features

Copper slag is a siliceous material and refractory in nature. Dissolution of the slag in sulphate media for recovery of iron is usually found very difficult as silica forms a thick gel. An innovative process is developed at CSIR-NML for dissolution of copper slag for recovery of iron which obviate the problem of silica dissolution and interference during recovery process.

5.

Level/Scale of Development

Kilogram scale

6.

Environmental Considerations

Non-hazardous

7.

Status of Commercialization

Ready for commercialisation

8.

Major Raw Materials to be Utilized

Copper slag, sulphuric acid, alkali

9.

Major Plant Equipment and Machinery Required

Grinding facility, Leaching set-up, filtration unit, drying facility

10.

Techno-Economics

Avalable on demand

11.

Technology Package

Technology will be transferred with details of process description, operating parameters, equipment specification, mass balance, preliminary cost estimation etc