CITIC's new comments follow Mineralogy's move to file an application in the Federal Court in Perth seeking to liquidate Sino Iron for non-payment of funds.
Mineralogy said it was concerned Sino Iron would be unable to pay its debts when they fell due, considering payments under normal arrangements were more than three months in arrears.
"We categorically reject Mineralogy's latest claims and will vigorously defend our legal position, in the interests of the project, the company and our shareholders," CITIC told MiningNews.Net.
"During the past year, there have been several attempts by Mineralogy to have the project suspended or terminated. All have failed before the courts."
CITIC said it saw nothing new in Mineralogy's latest claims, and it stood by its recent comments.
"CITIC has already paid Mineralogy more than $400 million for the right to mine and develop the project," it said.
"Payments are being made for royalty A. Royalty B remains in dispute. The issue now requires resolution by the courts."
The new legal battle follows a Federal Court decision that saw Mineralogy declared as the port operator at the project's Cape Preston port for maritime security purposes.
CITIC said the decision would not halt exports from the Sino Iron project.
Along with chasing further payments from CITIC, Palmer previously claimed the Hong Kong company had "raped and disrespected" Australian interests.
In its most recent statement CITIC rejected the accusations.
"CITIC has always complied with the laws of the land and always paid our fair share in accordance with agreements. We will continue to do so," it said.