R&D at Hindustan Newsprint Limited:
The in-house R&D at Hindustan Newsprint Limited is recognized by Department of Scientific and Industrial Research (DSIR), Ministry of Science & Technology, New Delhi in the year 1992. The R&D section is well equipped with sophisticated lab equipments. This has got the facilities to carryout R&D activities in the areas of

  • Pulping
  • Bleaching
  • Deinking
  • Paper making
  • Chemical recovery
  • Water treatment
  • Pollution control and
  • Relevant fields related to the above

R & D activities:
The R & D activities are carried out to:

  • Improve the product quality and productivity of the mill with the available resources.
  • Find out alternate raw materials to meet the shortage of conventional raw materials.
  • Use of more secondary fibres to conserve forest based raw materials.
  • Improvement processes, technologies & techniques.
  • Exploring the possibility of wastes into value added products.
  • Making newsprint manufacturing technology more environment friendly.

Product/process development jobs so far completed:

  • Change from three stage refining to two stage in chemimechanical pulp mill to save energy without compromising pulp quality.
  • Use of retention aid in Paper machine helps reduction in fluff and improvement in print quality in printing press.
  • Alkyl Ketene Dimer (AKD) is being used in process to reduce water absorbency of newsprint slightly to facilitate four colour printing on both sides.
  • Fatty acid soap, which is a common chemical for waste paper deinking has been successfully replaced by cost effective surfactants.
  • Development of pilot plant for making Calcium chloride from lime sludge has been initiated by  R&D .The pilot plant operation in making calcium chloride from lime sludge has been demonstrated successfully and this has been proved to be a viable option.
  • Studies revealed that the  Effective Residual Ink concentration (ERIC) in final Deinked  pulp (DIP) made from 100% Old Newspaper (ONP) is high and brightness is low in comparison to DIP made from ONP mixed with Old Magazine (OMG). It is inferred that a minimum of 10% OMG mixed with ONP helps to reduce the ERIC  and improve the pulp brightness.
  •  Based on R& D studies to reduce furnace oil consumption in Lime Reburning  Plant, woodfines are being added along with furnace oil. The cost of production of Product Lime reduced by Rs 430/MT because of reduction in furnace oil consumption.
  • From the existing pulp availability and achieving of the possible high brightness pulp in their respective pulp plant, writing and printing paper of Cream wove grade (75% ISO Brightness) is manufactured in paper machine with the pulp furnish of 22% Imported Hardwood sulphite pulp, 55% Own chemical pulp and 23% high brightness own deinked pulp.
  • It is found that The mechanical and optical stability of writing and printing paper is unaffected by adding 10-15% high brightness CMP pulp . This furnish is being implemented successfully.

Product / Process development jobs in hand:

  • Study on coal (imported+indigenous) and other solid fuels blend to optimize their thermal value.
  • Deinking effect on ageing of old newsprint.

no img