A Queensland man who murdered his wife and dissolved her body in a bin of acid is appealing his murder conviction.

Klaus Andres, 70, was found guilty last month of murdering his Chinese wife in October 2011.

Following a trial in the Cairns Supreme Court, he was sentenced to life in prison.

A Department of Justice spokeswoman on Wednesday confirmed that Andres’s lawyers had lodged an appeal against the murder conviction.

The case will be heard in the Court of Appeal. No date has been set.

At the start of last month’s trial, German-born Andres admitted he dissolved Li Ping Cao’s body in a wheelie bin of acid, but said her death was an accident.

He claimed he pushed her in self defence and that she died instantly when she fell on to the kitchen floor at their Cairns home.

Andres said he didn’t call police because he thought he would be blamed for her death.

He also admitted pouring Ms Cao’s remains down a storm drain outside the couple’s home. Only her false teeth were found by investigators.

Andres met Ms Cao while on holiday in China in 2006 and the pair married in November that year.

About two months before Ms Cao’s death, Andres began a sexual relationship with a 35-year-old Thai woman he met at a Cairns casino while the she was on holiday.

Andres is appealing on the grounds that the trial judge erred in admitting a key piece of evidence – a letter Andres sent to Centrelink.

His legal team will argue it could have encouraged the jury to infer intent or premeditation.

It was revealed during the trial that Andres sent a letter to Centrelink asking the agency to redirect his wife’s welfare payments to his bank account.