Microwave-assisted thermal treatments for producing Nanoparticle pigment

微波辅助热处理生产纳米颗粒颜料

基本信息

批准号：
514634-2017
负责人：
Hassani, Faramarz
金额：
$ 1.82万
依托单位：
McGill University
依托单位国家：
加拿大
项目类别：
Engage Grants Program
财政年份：
2017
资助国家：
加拿大
起止时间：
2017-01-01 至 2018-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=639397
关键词：
Microwave assisted thermal treatments producing

项目摘要

Pigment production has thermal treatment stages that can substituted by microwave radiation such asdewatering, preheating and calcination. In dewatering of Nanoparticle slurry, performances of both filtrationand thickening are affected negatively. Nanoparticles reduce performance or block porous space inside filtercloth. Therefore, filtration should be done as a batch process with low performance. Also, nanoparticles causeserious problems for thickening operation including slow particle settling, increase in residence time, andbigger flocculant consumption. For a pigment slurry, low power microwave treatment can be used as asubstitute for filtration, and work with or without thickener. Microwave application for calcination is morecomplicated compared to dewatering, because it is expected to generate higher temperatures as well as improvephysical phase transformation. This research work will focus on microwave-assisted dewatering andcalcination. Argex Titanium Incorporated, is developing a novel technology for producing titanium oxidepigment. Preheating, dewatering and calcination stages are part of the production line. Therefore,microwave-assisted heating can be used for these preheating and dewatering and calcination. Developing thisnovel microwave-assisted thermal treatment technique will lead to less energy consumption, better control onthe process and higher process efficiency for Canadian pigment industry the advantages of which will increasethe profitability of the pigment plant.

颜料产生的热处理阶段可以用微波辐射取代，例如，预热，预热和钙化。在纳米粒子浆液的脱水中，两种过滤和增厚的性能受到负面影响。纳米颗粒会降低性能或阻止过滤器内部的多孔空间。因此，应进行过滤作为批处理过程，其性能较低。此外，纳米颗粒会导致加厚操作的问题，包括缓慢的粒子沉降，停留时间增加和抗体絮凝剂消耗。对于色素浆，低功率微波处理可以用作过滤的Asubstitute，并使用或不使用增稠剂。与脱水相比，微波施用的钙化量是如此，因为预计它将产生更高的温度以及改善身体相变的变化。这项研究工作将集中于微波辅助的脱水和钙化。 Argex Titanium Incorporated正在开发一种用于生产氧化钛系列的新技术。预热，脱水和钙化阶段是生产线的一部分。因此，微波辅助加热可用于这些预热，脱水和钙化。开发此运动型微波辅助的热处理技术将导致更少的能源消耗，更好地控制过程以及加拿大色素行业的提高过程效率，其优点将提高色素厂的利润率。